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3 years ago

Can someone help me pleaseee...

Mathematics

1 answer:

grandymaker [24]3 years ago

3 0

Answer:

what you need help with?

Step-by-step explanation:

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X(15-x)=50 quadratic equations

meriva

Answer:

$15x - {x}^{2} =50 \\ {x }^{2} - 15x + 50 = 0 \\ {x}^{2} - 10x - 5x + 50 = 0 \\ x(x - 10) - 2(x - 10) = 0 \\ (x - 2)(x - 10) = 0 \\ x = 2 \: and \: x = 10$

3 0

3 years ago

How do you graph x - y < 4

katrin [286]

Answer: y > -4 + x

Step-by-step explanation: graph the inequality by finding the boundary line

8 0

3 years ago

Read 2 more answers

Researchers studying the effect of diet on growth would like to know if a vegetarian diet affects the height of a child. Twelve

Eva8 [605]

Answer:

a) $t_{0.035},11=\pm2.201$

b) $t=-2.963$

c) $Reject\ H_0\ when\ \alpha=0.05$

d) $t$

$-2.963$

Step-by-step explanation:

From the question we are told that:

Sample size $n=12$

Mean $\=x=42.5$

Standard deviation $\sigma=3.8$

Population mean $\mu=45.75$

Significance $\alpha=0.05$

Generally the hypothesis given by

$H_0;\mu=45.75\\H_1:\neq =45.75$

Generally the equation for test statistics is mathematically given by

$t=\frac{\=x-\mu}{\sigma/\sqrt{n} }$

$t=\frac{42.5-45.75}{3.8/\sqrt{12} }$

$t=-2.963$

Generally the Critical value is mathematically given by

$t_{\alpha/2},d_t$

$\alpha=0.05 \\\alpha/2=0.025\\d_t=n-1=11$

$t_{0.035},11$

From table

$t_{0.035},11=\pm2.201$

Therefore

$t$

$-2.963$

$Reject\ H_0\ when\ \alpha=0.05$

4 0

3 years ago

What is the slope of the line that passes through the points (2, 1) and (17, -17)?

spin [16.1K]

Answer:

-6/5 or -1(1/5)

Step-by-step explanation:

Slope formula

y2 - y1/ x2 - x1

-17 - 1/ 17 - 2

-18/ 15

-6/5

4 0

3 years ago

Read 2 more answers

Given: -1/2x > 6.

lubasha [3.4K]

Answer:

B(2)

Step-by-step explanation:

SO basically think of it as x is a teenager that wants to be alone. so have to figure out how to get everyone on the otehr side of their bedroom door (>)

so you are going to do this

-1/2x>6

/-1/2x /-1/2x

x<6/-1/2

x<6*-2/1

x<-12

Read more on Brainly.com - brainly.com/question/14190937#readmore

8 0

3 years ago

Can someone help me pleaseee...​

Can someone help me pleaseee...