Josie took a long multiple-choice, end of the year vocabulary test. The ratio of the number of problems Josie got incorrect to the number of problems she got correct is 2:9. If Josie missed 20 questions, how many did she get correct?

Answers

Answer 1

Hence she got 90 correct answer.

How many did she get correct?

Ratio of the number of problems she got incorrect to the number of problems she got correct = 2:9

Number of incorrect answers = 8

Let the number of incorrect answers be 2x

Let the number of correct answers be 9x.

So, According to question, we get that

[tex]2x = 20\\ x =\frac{20}{2} \\ x = 10[/tex]

So, the number of correct answers would be

  [tex]9x = 9\times 10\\\\ =90[/tex]

Hence she got 90 correct answer.

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Related Questions

3/v=8/13 using cross prouducts property

Answers

Answer:

v = 4.875

Step-by-step explanation:

Anytime you have a proportion (a fraction = a fraction)

you can cross multiply to change the equation (get rid of the fractions!) and solve.

see image.

3/v = 8/13

8v = 39

v = 4.375

see image.

Simplify as far as possible.
2√3+3√3

Answers

Answer: 0.51639777..

Step-by-step explanation:

One freezer costs $623.95 and uses 90 kilowatt hours (kwh) of electricity each month. A second freezer costs $500 and uses 100 kwh of electricity each month. The expected life of each freezer is 12 years. What is the minimum electric rate in cents per kwh for which the 12-year total cost (purchase price + electricity costs) will be less for the first freezer?

Answers

The minimum electric rate in cents per kwh for which the 12-year total cost will be less for the first freezer is 8.61 cents

How to calculate the rate?

Let x =  minimum electric rate (Cents/kWh)

Total months in 12 years is 12*12 = 144 m

1st freezer

Total cost over 12 years is

623.95 (cost) + (90 kWh/m)*(144 m)(x/100 $/kWh)

= 623.95 + 129.6x

2nd freezer

Total cost over 12 years is

500 + 100*144*(x/100)

= 500 + 144x

For the 1st freezer to cost less over 12 years,

623.95 + 129.6x < 500 + 144x

123.95 < 14.4x

8.61 < x

The minimum rate is 8.61 cents per kWh

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17+|-12--5|--16
show how you got the answer

Answers

17+|-7|--16
17+7+16
40
First you do pemdas so -12–5 is -7 and then you will get 17+-7-16 then you add and that will give you 10 so know you have 10-16= -10

PLEASE HELP ME ANSWER 34,36

Answers

Y is equal to 30 other is too blurry learn to take a better photo… thanks

A polynomial p(x) is given as 2x^2-3kx+5
One of the zeros of p(x) is -1
Find k.

Answers

Answer:

[tex]k = -\frac{7}{3}[/tex]

Step-by-step explanation:

Given :

p(x) = 2x² − 3kx + 5

Since, -1 is a zero for p then :

p(-1) = 0

Solving the equation p(-1) = 0 for k :

p(-1) = 0

⇔ 2(-1)² − 3k(-1) + 5 = 0

⇔ 2 + 3k + 5 = 0

⇔ 3k = -5 - 2

⇔ 3k = -7

⇔ k = -7/3

NOTE :

If -1 is a zero of p

[tex]\Longrightarrow k = -\frac{7}{3}[/tex]

[tex]\Longrightarrow p(x) = 2x^2 - 3(\frac{-7}{3}) x + 5\\\Longrightarrow p(x) = 2x^2+ 7x + 5[/tex]

The following table shows the different savings account available at Capital Bank. Use the table to answer questions
Kate is depositing $5,000 into an account for her son’s education. Which account should she choose?

A. Teen Savings, because her son is a teen
B. College Savings, because she meets the minimum deposit and it earns more interest
C. Regular Savings, because it earns compound interest.
D. Platinum Savings, because it has the highest interest rate.

Answers

Based on the accounts and the benefits they offer, Kate should choose B. College Savings, because she meets the minimum deposit and it earns more interest

Which account is best for Kate?

Kate should pick the college savings account for two reasons with the first being that the $5,000 she wants to deposit meets the minimum deposit amount of $1,000.

The second reason is that the account earns more interest than other account.

Even though it is simple interest, the 9% is still much higher than the compound interest of 1% that the regular account gives.

Kate should choose college savings.

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rounded to the nearest tenth, what is the perimeter of rectangle abcd? a. 10.8 inches b. 13.7 inches c. 15.0 inches d. 18.7 inches

Answers

The perimeter of the rectangle ABCD is 13.7 inches.

What is the perimeter of the rectangle?

The perimeter of a rectangle is defined as the addition of the lengths of the rectangle's four sides.

The perimeter of a rectangle = 2(L+W)

Where W is the width of the rectangle  and L is the length of the rectangle

⇒ sin30° = AD/AC

⇒ AD = AC(sin30°) = 5(1/2)

⇒ AD = 2.5 inches

⇒ sin60° = CD/AC

⇒ CD = AC(sin30°) = 5(√3/2)

⇒ CD = 4.33 inches

The perimeter of rectangle ABCD = 2(AD) + 2(CD)

The perimeter of rectangle ABCD = 2(2.5) + 2(4.33) = 5 + 8.66

Rounded to the nearest tenth

The perimeter of rectangle ABCD = 13.66 ≈ 13.7 inches

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The question seems to be incomplete the correct question would be

Rounded to the nearest tenth, what is the perimeter of rectangle ABCD?

rectangle ABCD with diagonal AC, labeled as measuring 5 inches, angle BAC measuring 30 degrees, angle BCA measuring 60 degrees, angle DCA measuring 30 degrees, and angle DAC measuring 60 degrees.

-2+(-3)+(-4)+(-5)+(-6)+(-7)

Answers

Answer:

-27

here is the answer for you

A rectangle restaurant kitchen has a perimeter of 38 m in an area of 88 m² what are the dimensions of the kitchen

Answers

The dimensions of the kitchen are 11m × 8m.

In geometrical mathematics, a polygon with four sides is referred to as a quadrilateral, while a quadrilateral with two opposed, parallel, and equal sides is referred to as a rectangle.

A rectangle has four equal-sized angles. There are four angles in a rectangle.

A rectangle has 90° angles on all sides.

The rectangle's diagonal is the separation or length of a line segment that connects any two opposed vertices.

Let l and w represent the length and breadth of the rectangular kitchen, respectively.

we know that area of a rectangle = length × width

perimeter of a rectangle = 2(l ₊ b)

Given that the rectangular kitchen has an area of 88 m².

A = 88 m²

l × w = 88 m² ....eq(1)

The perimeter of the rectangle is 38 m.

Perimeter (P) = 38 m

2(l+w) = 38 m

l+w = 19 m

l = 19 - w .....eq(2)

substitute eq(2) in eq(1).

l × w = 88 m²

(19 - w)w = 88

19w - w² = 88

-w²+19w-88 = 0

w²-19w+88 = 0

By factorization method, we get:

w²-11w-8w+88 = 0

w(w-11)-8(w-11) = 0

(w-11)(w-8)

w = 11 or w = 8

If w = 11,

then l = 19-11 = 8m

and If w = 8m

then, l =  19-8 = 11m

so the dimensions are 11m×8m

Hence we get the dimensions of the kitchen are: 11m×8m

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A
C
3.
Find m2LMN if mLME=24°
and mLEMN = 42°
66⁰
18⁰
M
B
D
24⁰
42⁰

Answers

Answer:

this question is impossible!11!1!!!!

Step-by-step explanation:

none

64x+60 simplified expression

Answers

Answer:

4(16x+15)

Step-by-step explanation: They both have the common factor of 4

Each time John rides the bus to school he pays $3. Write and solve an equation that represents the change in John's money from riding the bus to and from school for 17 days

Answers


Every day that John rides on the bus, he loses $3

if he rides on the bus for 17 days, it can be solved like this
(3 x 2)17 = 102$
The change is John's money is -$102 over a span of 17 days

Hope this helped

need help asap WILL GIVE YOU BRAINLIEST

Thanks!!!

Answers

Answer:

14 is an obtuse angle

Step-by-step explanation:

An obtuse angle is an angle that is bigger than 90° degrees but doesn’t reach a straight line at 180°.

Which expression is equivalent to √125x6^y15^z3^?

Answers

The second answer of the question is correct

Answer:

[tex]5x^2y^5z[/tex]

Step-by-step explanation:

Hello!

Expand the cube root:

[tex]\sqrt[3]{125x^6y^{15}z^3}[/tex][tex]\sqrt[3]{125}* \sqrt[3]{x^6} * \sqrt[3]{y^{15}}*\sqrt[3]{z^3}[/tex]

Use exponent rule:

[tex]\sqrt[a]{b^c} = b^{\frac ca}[/tex]

Simplify[tex]\sqrt[3]{125}* \sqrt[3]{x^6} * \sqrt[3]{y^{15}}*\sqrt[3]{z^3}[/tex][tex]5^{\frac33}*x^{\frac63}*y^{\frac{15}{3}}*z^{\frac33}[/tex][tex]5 * x^2 * y^5 * z[/tex][tex]5x^2y^5z[/tex]

The answer is [tex]5x^2y^5z[/tex].

What is a function and how can I identify one ?

Answers

Answer:

a function is a rule or correspondence by which each element x is associated with a unique element y.

hope this was helpful!

Bacterial Growth Exponential Function

Answers

Bacterial growth is expressed by an exponential function with the formula of [bacteria]=ae^[time]b

What is the natural number of the square root of 8

Answers

square is 64
Square root is 2.828

find the three postive consecutive integers such that the product of the smallest and the largest is 17 more than 3 times the median intger

Answers

Answer:

find the three postive consecutive integers such that the product of the smallest and the largest is 17 more than 3 times the median intger

Answer: 5, 6, 7

Step-by-step explanation:

Let three positive consecutive integers equal to x, x+1, x+2

Hence,

[tex]\displaystyle\\x(x+2)-3(x+1)=17\\x^2+2x-3x-3=17\\x^2-x-3-17=17-17\\x^2-x-20=0\\x^2-5x+4x-20=0\\x(x-5)+4(x-5)=0\\(x-5)(x+4)=0\\x-5=0\\x-5+5=0+5\\x=5\in\ (x > 0)\\x+4=0\\x+4-4=0-4\\x=-4\notin\ (x > 0)\\5+1=6\\5+2=7[/tex]

find the angle measure then classify the angle (I'm very bad at this one and I need help instantly ​

Answers

Answer:

30,70,110

Step-by-step explanation:

12. acute

13. acute

14. obtuse

I WILL GIVE 35 POINTS TO THOSE WHO ANSWER THIS PROBLEM RIGHT NOOOO SCAMS

Answers

Using translation concepts, we have that:

4. The type is f(x + k), with k = 3, and a horizontal shift.

5. The type is kf(x), with k = 5 and a vertical stretch.

What is a translation?

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction either in it’s definition or in it’s domain. Examples are shift left/right or bottom/up, vertical or horizontal stretching or compression, and reflections over the x-axis or the y-axis.

For graph 4, we have function g(x) is a shift left of 3 units of function f(x), hence:

The type is f(x + k), with k = 3, and a horizontal shift.

For graph 5, we have that for each value of x, g(x) = 5f(x), hence:

The type is kf(x), with k = 5 and a vertical stretch.

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what is 4 squared 5



Answers

Answer: 4^5=1024

Step-by-step explanation:

4x4x4x4x4=1024

Answer:

1024!

Step-by-step explanation:

explaining how to use linear pairs and vertical anglesimagine two lines intersect. how can the properties of linear pairs and vertical angles help to determine the angle measures created by the intersecting lines? explain.

Answers

you know the measure of one angle in a linear pair, you can find the measure of the other because the sum of the measure of the two angles is 180 degrees. If you know the measure of one angle in a pair of vertical angles, you can find the measure of the other because they are congruent.

Linear distribute properties 6(y+3)=30

Answers

Answer:

y=2

Step-by-step explanation:

6 times y and six times 3

6y+18=30

    -18  -18

6y=12

divide both sides by 6 and you will get y=2

Exercise
Respond to the following based on your reading.

1. Which numbers are to the right of 0 on the number line?
2. Which numbers are to the left of 0 on the number line?
3. Is 0 an integer?
4. Draw a number line with integers from –3 to 6.
5. Solve the problems:
a. −8 + 0 =
b. 1 × (−14) =
c. 19 ÷ 1 =
d. 0 × 104 =
e. −21 − 0 =

Answers

Answer:

please solve this question 4²×3³×(-1)¹²²

Is 10 squared greater than or less then or equal to 5

Answers

Answer:

10 squared is 100 so 10 squared is greater than 5.

Step-by-step explanation:

Hope its corrects and it helps you!

Rachel received a 90$ gift card for a coffee store

Answers

That's great for Rachel! I would love a gift card as well where is this at?

What is 32 Quartz to 48 Quartz?

Answers

32 Quartz to 48 Quartz is 2/3 Quartz

What is Quart measurement ?

The quart is a measurement which is use to find the capacity of liquid. Or we can say Quart is a unit of liquid volume which is measured in gallon. There are different measurements into which we can convert the unit such as ounces and liters. These conversion values are as below :

Mathematically, we can write :

In terms of ounces

          1 quart = 32 fluid ounces

In terms of liters

          1 quart = 0.94 US liters = 4 cups (approx.)

According to given question,  32 Quartz to 48 Quartz is the ratio of 32 and 48 Quartz value.

Mathematically, we can write :

[tex]\frac{32 \ Quartz }{48 \ Quartz}\\ \\= \frac{2 \ Quartz}{3 \ Quartz} \\\\or, = \frac{2}{3} Quartz[/tex]

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17. The difference of a number and 12 is three. Find the number.

Answers

15-12=3 I think the answer is 15 so the difference of a number and 12 is 15

A six-sided dice is rolled twice. The sides are labeled 1-6. What
is the probability of rolling an odd number and then rolling a 2?
(Give your answer as a reduced fraction).

A 3/36
B 1/18
C 1/12
D 1/36

Answers

The probability of rolling an odd number and then rolling a 2 is 1/12.

Option C is true.

What is Probability?

Probability is measure of the likelihood of an event to occur.

Given that;

A six - sided dice is rolled twice.

The sides are labelled 1-6.

Now,

In a dice odd number are 1, 3, 5

Hence, The probability of rolling an odd number = 3/6

And, The probability of rolling a 2 = 1/6

So, The probability of rolling an odd number and then rolling a 2

= 3/6 x 1/6

= 1/12

Hence, The probability of rolling an odd number and then rolling a 2 is 1/12.

Option C is true.

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