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3 years ago

Not sure how to solve this

Mathematics

1 answer:

Margarita [4]3 years ago

8 0

Answer:

-3/17

Step-by-step explanation:

(7,1) and (-10,4)

slope formula: m = (y₂ - y₁) / (x₂ - x₁)

plug in data: m = (4 - 1) / (-10 - 7)

solve: 3 / -17

simplify: -3/17 (written as a fraction)

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Twice the sum of a number and- 2 =16

o-na [289]

2+a-2=16 hopefully this will help

5 0

3 years ago

Help in this question please?

Artyom0805 [142]

my issues is how we finna see this it's small but I think that it could be 25 or 7

4 0

3 years ago

Ryan is studying. The number of minutes he has studied varies directly with the number of calories he has burned. See the

Pie

Answer:

0.1 minute per calorie burned. Slope is up 0.1 , right 1. or 0.1/1

Step-by-step explanation:

You find a point such as (10,100) or (20,200) then you divide the number of minutes by calorie burned to get minutes per calorie burned.

4 0

3 years ago

N = 9

g100num [7]

Answer:

The p-value is 0.809.

Step-by-step explanation:

In this case we need to perform a significance test for the standard deviation.

The hypothesis is defined as follows:

H₀: σ₀ = 4 vs. Hₐ: σ₀ ≤ 4

The information provided is:

n = 9

s = 3

Compute the Chi-square test statistic as follows:

$\chi^{2}=\frac{(n-1)s^{2}}{\sigma_{0}^{2}}$

$=\frac{(9-1)\cdot (3)^{2}}{(4)^{2}}\\\\=\frac{8\times 9}{16}\\\\=4.5$

The test statistic value is 4.5.

The degrees of freedom is:

df = n - 1

= 9 - 1

= 8

Compute the p-value as follows:

$p-value=P(\chi^{2}_{9}>4.5)=0.809$

*Use a Chi-square table.

Thus, the p-value is 0.809.

7 0

3 years ago

What is the value of x?

Nikolay [14]

Answer:

5 units (you are right!)

Step-by-step explanation:

The triangles ABD and BCD are similar.

Therefore,

$\frac{x}{10}=\frac{10}{4x} \\4x^{2}=100\\x^{2}=25\\x=5$

I hope this helped!

6 0

3 years ago