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2 years ago

The value of the expression

Mathematics

2 answers:

r-ruslan [8.4K]2 years ago

7 0

Answer:

f(5) = 75

Step-by-step explanation:

The function is f(x) = 2x^2 + x(100 - 15x).

Evaluate this function at x = 5: replace each instance of x with 5:

f(5) = 2(5)^2 + 5(100 - 15·5)

Order of operations rules require evaluating the expression enclosed in parentheses first. We get:

f(5) = 2(5)^2 + 5(100 - 15·5)

= 50 + (100 - 75), so that:

f(5) = 50 + 25 = 75

f(5) = 75

damaskus [11]2 years ago

4 0

Answer:

175?

Step-by-step explanation:

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Ksenya-84 [330]

Answer:

the correct answer is 52

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2 years ago

Which of the following figures has a length, width, and height?

rodikova [14]

Answer:

I believe

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2 years ago

Read 2 more answers

Two samples each of size 25 are taken from independent populations assumed to be normally distributed with equal variances. the

NeTakaya

$n_1=25, n_2=25\\ \bar{X_1}=35.5, \bar{X_2}=33\\ s_1=3, s_2=4$

Pooled Combined Variance $s_p=12.5$

Test Statistic:

$t=\frac{\left(\bar{X_1}-\bar{X_2}\right)}{s_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}$

$t=\frac{\left(35.5-33\right)}{12.5\sqrt{\frac{1}{25}+\frac{1}{25}}}$

$\left|t\right|=0.01414$

Degrees of freedom = $n_1+n_2-2=25+25-2=48$

$\alpha =0.05$

$t-Critical =t_{\alpha /2, n_1+n_2-2}=t_{0.025, 48}=-2.0206 \\Table value=|t|=2.0206\\|t|=2.0206$

The table value is greater than the calculated value.

Thus we accept H0.

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3 years ago

Please answer correctly !!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!! And find y also !!!!!!!!!!!!!!!!!

AnnyKZ [126]

Answer:

I think that x equals 14

Step-by-step explanation:

So 136 is a vertical angle to the angle under it, which then makes it a corresponding angle to (9x+10), so 9x+10 should equal 136, so I believe x=14.

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3 years ago

(3, -2), slope - 1/6

Reika [66]

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-1.5+b
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3 years ago