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dezoksy [38]
3 years ago
10

HELP! I will give BRAINLIEST!! Please EXPLAIN Olga tried to solve an equation step by step. ​ Equation: 1/4 ( 1/3k + 9) = 6 ​ St

ep 1: 1/3k + 9 = 24 Step 2: 1/3k = 15 Step 3: k = 5 Find Olga's mistake. Step 1 Step 2 Step 3 Olga did not make a mistake.
Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
3 0

Answer:

Olga's mistake was in Step 3 because she divided the entire equation by 3 instead of dividing it by 1/3.

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What is the area of the composite figure? Enter your answer as a decimal in the box. cm2​
OverLord2011 [107]
Area = 7 x 7 + 1/2 x 7 x 3
= 49 + 10.5
= 59.5cm2
8 0
2 years ago
F(x)=(-3x+2) and g(x)=(2x^2-5x-1)
pashok25 [27]

Answer: -6x² + 15x + 5

Step-by-step explanation:

To solve this problem, you only need to substitute g(x)'s equation as the value of the x in f(x), then simplify.

Step 1: f(x) = -3(2x² - 5x - 1) + 2

Step 2: Apply the distributive property

-3(2x²) + -3(-5x) + -3(-1)

-6x² + 15x + 3

Step 3: Simplify

f(x) = -6x² + 15x + 3 + 2

f(x) = -6x² + 15x + 5

6 0
2 years ago
whats the answer to -v+w=7 v+w=1 when this is a '' use elimination to solve each system of equations
Fittoniya [83]
-v+w=7\\ \underline{v+w=1}\\
2w=8\\
w=2\\\\
v+2=1\\
v=-1

6 0
3 years ago
9 and 10 pls help :)
tatuchka [14]

Answer:

Question 9

Option A

Question 10

Option A

<h2>Please mark as brainliest for further answers :)</h2>

5 0
2 years ago
rectangle A has a length of 24 meters and a width of 20 meters. rectangle B has the same area as rectangle A. the width of recta
blagie [28]
To solve this, first we'll find the area of the rectangle A,

Area=length × width
?=24m×20m
480m=24m×20m
480m squared=area of the rectangle A

now we'll find the width of rectangle B,
"the width of rectangle B is 12 meters less than the width of rectangle A",
20m-12m= 8m
8m=width of rectangle B

finally we'll find the length of rectangle B,
area of the rectangle B= 480msquared
width= 8m
length=? (to find this divide the area by the width)
480÷8=60m
length of the rectangle B=60m



7 0
3 years ago
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