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3 years ago

V = 5x + 2y X = 3 y = -4 a) Work out the value of V.

Mathematics

2 answers:

kherson [118]3 years ago

8 0

V= 5(3)+2(-4)
V= 15-8
V=7

devlian [24]3 years ago

3 0

Answer:

here is a graph for you

Step-by-step explanation:

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In 2006, 95% of new cars in the US came with a spare tire. In 2017, 72% came with a spare tire.

MArishka [77]

Using the Central Limit Theorem, it is found that:

The mean is 0.23.

The standard deviation is $s = \sqrt{\frac{0.95(0.05)}{250} + \frac{0.72(0.28)}{250}}$ .

<h3>Central Limit Theorem</h3>

It states that for a <u>proportion p in a sample of size n</u>, the sampling distribution of sample proportions has mean $p$ and standard deviation $s = \sqrt{\frac{p(1 - p)}{n}}$

When two variables are subtracted, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.

In 2006, 95% of new cars in the US came with a spare tire, with a sample of 250, hence:

$p_1 = 0.95, s_1 = \sqrt{\frac{0.95(0.05)}{250}}$

In 2017, 72% of new cars in the US came with a spare tire, with a sample of 250, hence:

$p_2 = 0.72, s_2 = \sqrt{\frac{0.72(0.28)}{250}}$

Hence, for the distribution of differences:

$p = p_1 - p_2 = 0.95 - 0.72 = 0.23$

$s = \sqrt{s_1^2 + s_2^2} = \sqrt{\frac{0.95(0.05)}{250} + \frac{0.72(0.28)}{250}}$

To learn more about the Central Limit Theorem, you can take a look at brainly.com/question/16695444

7 0

2 years ago

This Question: 1 pt

zhenek [66]

$\huge{ \mathfrak{ \underline{ Answer }\: \: ✓ }}$

Angles forming linear pair are :

$\mathrm{\angle EFG \: \: and \: \: \angle GFH}$

And we know, they are supplymentary

$\mathrm{\angle EFG \: + \: \angle GFH} = 180 \degree$
$3n +1 9 \degree+ 2n + 36\degree = 180 \degree$
$5n + 55\degree = 180\degree$
$5n = 125\degree$
$n = 25\degree$

So, the measures of the given angles are :

$\mathrm{\angle EFG } = 3n + 19$
$\mathrm{ \angle EFG = (3 \times 25\degree) + 19}$
$\mathrm{ \angle EFG = 75 \degree+ 19\degree}$
$\mathrm{ \angle EFG = 94\degree}$

And

$\mathrm{ \angle GFH = 2n + 36}$
$\mathrm{ \angle GFH = (2 \times 25\degree) + 36\degree}$
$\mathrm{ \angle GFH = 50\degree + 36\degree}$
$\mathrm{ \angle GFH = 86\degree }$

_____________________________

$\mathrm{ ☠ \: TeeNForeveR \:☠ }$

6 0

3 years ago

guajiro [1.7K]

Answer:

1. 93/100

2. 8 21/100

3. 24/100= 6\50= 3/25

4. 57/100

5. 48/100 = 24/50= 12/25

6. 3 48/100= 3 12/25

7. 2.232323= 2232323/1000000

2 232323/1000000

3 0

3 years ago

Read 2 more answers

ellie is preheating her oven before using it to bake. the initial temperature of the oven is 65° and the temperature will increa

11111nata11111 [884]

Answer:

The temperature of the oven after 6 minutes is 125 degrees and after 10 minutes its 165 degrees.

Step-by-step explanation:

10 x 6 = 60

60+65=125

10 x 10 = 100

100+65=165

8 0

3 years ago

Simplify. Assume the divisor is not zero. (4x2y2 – 4xy) ÷ 4xy A. 2xy B. 2xy – y C. xy – 1 D. 2xy – 1

inessss [21]

$D:4xy \neq 0 \\ \\ \frac{4x^{2}y^{2}-4xy}{4xy} = \frac{4xy(xy-1)}{4xy} =xy-1$

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7 0

3 years ago