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3 years ago

I will mark brainest if you get it right. 1. x + 20 = 5x +4 x=

Mathematics

2 answers:

taurus [48]3 years ago

8 0

Answer:

x=4

Step-by-step explanation:

Subtract 5x from both sides: -4x+20=4

Subtract 20 from both sides: -4x=-16

Divide -4 from both sides: x=4

Scrat [10]3 years ago

8 0

Answer:

x = 4

Step-by-step explanation:

I will explain if you ask.

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Find the area and perimeter of the shape below

Sladkaya [172]

Solution:

Note that:

Area = Base x Height
Perimeter = Sum of all sides

Finding the area of the parallelogram:

Area = Base x Height
=> Area = 9.2 x 3.8
=> Area = 34.96 cm²

Finding the perimeter of the parallelogram:

Perimeter = Sum of all sides
=> Perimeter = 2(4.1) + 2(9.2)
=> Perimeter = 26.6 cm

Correct option is D.

3 0

2 years ago

Read 2 more answers

Solve John bakes 147 donuts in 7 batches. How many does each batch contain?

lys-0071 [83]

You can solve this by dividing the baches into the total amount of donuts.

147/7=21

Each batch has 21 donuts.

8 0

3 years ago

Read 2 more answers

Given: WZ perpendicular to WY, WZ bisects VY, and m angle V = 40.

lina2011 [118]

If V = 40, that makes Y = 40 as well

Angle VWZ =
$180 - 40 - 40 = 100$

The answer is B. 100

Hope this helps. - M

8 0

3 years ago

An analyst from an energy research institute in California wishes to precisely estimate a 99% confidence interval of the average

Lena [83]

Answer:

190

Step-by-step explanation:

Data provided in the question:

Confidence level = 99%

Therefore,

α = 1% = 0.01

[ from standard normal table ]

z-value for $z_{\frac{\alpha}{2}}= z_{\frac{0.01}{2}}=$ = 2.58

Margin of error, E = $0.06

Standard deviation, σ = $0.32

Now,

n = $(\frac{z_{0.005}\sigma}{E})^2$

Here,

n is the sample size (or the minimum number of gas stations )

on substituting the respective values, we get

= $(\frac{z_{0.005}\sigma}{E})^2$

= $(\frac{2.58\times0.32}{0.06})^2$

= 13.76²

= 189.3376 ≈ 190

Hence,

minimum number of gas stations that she should include in her sample is 190

5 0

3 years ago

Amanda has 745 blueberries. She separated the blueberries into 5 equal groups. How many blueberries are in 2 of the groups?

Anit [1.1K]

Answer:

298

Step-by-step explanation:

5 equal groups of 745 would have 149 blueberries. You want to find how much is in 2 groups so you add 2 groups together, which is 149 + 149. That equals 298.

4 0

3 years ago