is a=3 b=4 c=2 and d=-2 find the value of 3b²c-2ad
And ac-bd/7
Step-by-step explanation:
remember : calculations are usually done from left to right, but multiplications and divisions come before + and -.
and exponents come before multiplications and divisions.
and minus a negative number always turns into plus a positive number.
so,
3b²c - 2ad = 3×4²×2 - 2×3×-2 = 96 - -12 = 96 + 12 = 108
and
ac - bd/7 = 3×2 - 4×-2/7 = 6 - -8/7 = 6 + 8/7 = 7 1/7 ≈ 7.143
What is the value of a in the equation 3a+b = 54, when b = 9?
O 15
O 18
18 k
O 21
O 27
Answer:
15
Step-by-step explanation:
30. TRAVEL Before starting her vacation, Sari's car had 23,500 miles on the
odometer. She drives an average of m miles each day for two weeks. Write
an expression that represents the mileage on Sari's odometer after her trip.
Answer:
(23,500 +14m) miles
Step-by-step explanation:
the mileage on Sari's odometer after her trip =
(23,500 + 14 m) miles
-6, 20, 4.3, 159/-9
Order from least to greatest
(
Solve this equation for p:
P+1 / 2 = 3p+7/5
Answer:
p = -10
Step-by-step explanation:
[tex]\frac{p+1}{2} = \frac{3p+7}{5}[/tex] cross multiply fractions
6p + 14 = 5p + 5
6p - 5p = 5 - 15 subtract like terms
p = - 10
Please helpppppppppppp
Answer:
B. -9/11
Step-by-step explanation:
(f/g)(-4) = f(-4) / g(-4)
To find f(-4), we plug in -4 everywhere there is an x
f(-4) = 2(-4) - 1 = -8 - 1 = -9
Same idea for g(-4):
4(-4)^2 + 14(-4) + 3
4*16 - 56 + 3 = 11
So (f/g)(-4) = f(-4) / g(-4) =
-9/11
please help it is midpoint
Answer:
(8.3, 3.15 )
Step-by-step explanation:
Given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is
( [tex]\frac{x_{1}+x_{2} }{2}[/tex] , [tex]\frac{y_{1}+y_{2} }{2}[/tex] )
Here (x₁, y₁ ) = (4.6, 2.3) and (x₂, y₂ ) = (12, 4) , then
midpoint = ( [tex]\frac{4.6+12}{2}[/tex] , [tex]\frac{2.3+4}{2}[/tex] ) = ( [tex]\frac{16.6}{2}[/tex] , [tex]\frac{6.3}{2}[/tex] ) = ( 8.3, 3.15 )
Answer:
[tex]mid \: point \: for \: x = \frac{x1 + x2}{2} \\ = \frac{4.6 + 12}{2} \\ x = \frac{16.6}{2} \\ x = 8.3 \\ mid \: point \: of \: y = \frac{y1 + y2}{2} \\ y = \frac{2.3 + 4}{2} \\ \frac{6.3}{2} = 3.15 \\ then(x \: y) = (8.3 \: 3.15) \\ thank \: you[/tex]
Me dicen cuanto es el
* f ) *
Answer:
[tex]e) \sqrt{144.9} = \sqrt{12.3} \\ f) \sqrt[3]{ \sqrt{64} } \\ \sqrt{64} = 8 \\ then \: \sqrt[3]{8} = 2 \\ thank \: you[/tex]
The square root of 36 is
(Round to the hundredths place if necessary)
Answer:
6
Step-by-step explanation:
6 x 6= 36
What does Decreased by mean
A subtraction
b addition
C multiplication
d division
e equal
Someone help me with this please
MACARONI AND AN POT THATS AN WAAAAAPP
Which transformation can you use to show that these shapes are congruent?
Answer:
Rotations, reflections, and translations are isometric. That means that these transformations do not change the size of the figure. If the size and shape of the figure is not changed, then the figures are congruent.
2m + 3m2 - 4m
What is if if I simplify each expression by combining like terms
Answer:
= 3m2 + 2m - 4m
= 3m2 - 2m
Step-by-step explanation:
you can only subtract similar products
please help me is for my homework
Answer:
126/100
Step-by-step explanation:
126% / 100
= 1.26
Answer:
1.26
Step-by-step explanation:
divide 126 by 100 first
[tex]\frac{126}{100}[/tex]
you will get
1.26
tim x: 3x(x-2) + 2(2-x)=0
Answer:
Assuming this is the full problem.
3x^2-8x+4
Step-by-step explanation:
Solve and show how pls
Answer:
16
Step-by-step explanation:
since -4 is being squared, we can write it out as -4 * -4, to get us the answer 16. this answer is positive because a negative times a negative will cancel out and = a positive.
What does x equal?
2x + 5x – 4= 17
Answer:
x = 3
Step-by-step explanation:
2x + 5x - 4 = 17 (Given)
7x - 4 = 17 (Simplify)
7x - 4 + 4 = 17 + 4 (Add 4 on both sides)
7x = 21 (Simplify)
7x/7 = 21/7 (Divide 7 on both sides)
x = 3 (Simplify)
from the above given figure, DE parallel to BC. if AD = 3cm, DB = 4cm and BC = 14cm, find DE
DE \\ BC
So ;
[tex] \frac{AD}{AB} = \frac{DE}{BC} [/tex]
AD = 3cm , BC = 14cm , DB = 4cm
AB = AD + DB
AB = 3 + 4 = 7 cm
[tex] \frac{AD}{AB} = \frac{DE}{BC} \\ \frac{3}{7} = \frac{DE}{14} \\ DE = \frac{14 \times 3}{7} = \frac{42}{7} = 6[/tex]
So ; DE= 6 cmI hope I helped you^_^
Your house is located at point L. Your friend's house is located at point N.
M is the midpoint of IN. How far do you need to travel to walk home from
your friend's house?
3x
2x+ 2
M
N
Answer: 12 units
Replace "units" with "feet", "meters", etc. if your teacher instructs it.
==============================================================
Explanation:
M is the midpoint, which means segments LM and MN are the same length. This is because M cut LN in half.
So,
LM = MN
3x = 2x+2
3x-2x = 2
x = 2
Use this x value to then say
LM = 3x = 3*2 = 6MN = 2x+2 = 2*2+2 = 4+2 = 6Segments LM and MN are 6 units each.
From that, we know,
LN = LM+MN = 6+6 = 12
The distance from your house to your friends house is 12 units.
find the value of y,if (-4+y)=-7
step by step
Answer:
(-4+y)=-7
-4+y=-7
by adding 4 on both sides, we get
-4+4+y=-7+4
y=-3
Janelle is shopping around for the best cell phone plan. The best company is offering a $50 set up fee plus $60 per month. If the contract is for one year, how much will Janelle end up paying after one year?
$650
None of these choices are correct.
$770
$700
$720
Answer:
770
Step-by-step explanation:
12 month ×60 per month
Plus 50 set up fee
=770
Find the total surface area of a hemisphere of radius 7 cm. (Take /pi a to be 3.142.)
will mark brainliest
Solve the equation below.
3/2x - 2.2 = 2(0.7x - 1)
Answer:
x = 2
Step-by-step explanation:
3/2x - 2.2 = 2(0.7x - 1)
3/2x - 2.2 = 1.4x - 2
0.1x - 2.2 = -2
0.1x = 0.2
x = 2
Mary lives 1 3/4 miles from school. She rode her bycycle to school and back for 5 days. Which expression shows how to estimate the number of miles she rode?
The expression which represents the number of miles Mary rode in 5 days is 5*(2 + 2).
What is mixed fraction?A fraction represented with its quotient and remainder is a mixed fraction.
What is expression?An expression is a number, a variable, or a combination of numbers and variables and operation symbols.
According to the given question.
Distance between Mary's house and school = [tex]1\frac{3}{4} =\frac{7}{4}[/tex]
Number of days Mary rode her bicycle to school and back = 5
⇒ Distance travelled by Mary in one day = [tex]2(\frac{7}{4} )=\frac{7}{2}[/tex]
Therefore, the expression which represents the number of miles she rode in 5 days = [tex]5(\frac{7}{2} )=\frac{35}{2}=17.5 miles[/tex] ≈ 20 miles
Hence, the expression which represents the number of miles Mary rode in 5 days is [tex]5[/tex] *(2+2).
Find out more information about expression and mixed fraction here:
https://brainly.com/question/17724027
#SPJ3
Vicky earned 29.75 for working 3 1/2 hours. What was her hourly wage ?
Answer:
8. 5
Step-by-step explanation:
First of all, I converted 3 hours 30 minutes to min. And we have 60 mins in an hour.
Therefore 60 × 3= 180mins +30 mins = 210 mins
So,
If 210=29.75
60=?
Cross multiply
29.75×60/210
=8.5
She's earns 8.5 in an hour
i dont understand this please help!!!!! i will give brainliest
Answer: add 16 and 50
Step-by-step explanation: it’s asking for the entire length
The sum of 6 and x. What is the algebraic expression?
Answer:
6+x
Step-by-step explanation:
sum means add
6+x
Hey there!
When you see/hear the word “sum” in mathematics.. it usually means “to add”.
So, we are adding 6 from the unknown number (the x-value)
Answer: 6 + x
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Six times a number increased by five is fifty-three. What is the number?
Answer:
8
Step-by-step explanation:
6x+5=53
6x=48
6x/6=48/6
x=8
-7x(-2) it's multiply and divide integers
Answer:
14
step by step explanation
-7×(-2)
14
1. The sum of 6 times a number n and 4 times a number n is -30.
What is the number?
2. Four less than the product of 6 and a number n is -30.
What is the number? _____
3. Four less than the product of 6 and a number n is -30.
What is the number? _____
Answer:
-3
Step-by-step explanation:
1. 6n+4n=-30
10n=-30
n= -3little confused on q2,3