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erik [133]
3 years ago
9

What’s the area of the triangle?

Mathematics
1 answer:
Ket [755]3 years ago
8 0

Answer:

143

Step-by-step explanation:

base 11

height 26

Let me know if its right

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Y’all. I need you to help me
Sergio039 [100]

Answer:

10

Step-by-step explanation:

PQ/QR = ST/TR

17.5/QR = 7/4

QR = (17.5 x 4)/7

QR = 70/7

QR = 10

3 0
3 years ago
$5,000 is invested at a rate of 7% compounded monthly. Determine the final balance after 5 years.
VashaNatasha [74]

Answer:11,256

Step-by-step explanation:

4 0
3 years ago
In a​ study, researchers wanted to measure the effect of alcohol on the hippocampal​ region, the portion of the brain responsibl
ziro4ka [17]

Answer:

The hippocampus volumes in the alcoholic adolescents are less than the normal volume of 9.02 cm³

Step-by-step explanation:

Let x= the hippocampus volumes in the alcoholic adolescents

We'll conduct a hypothesis test at the 0.01 significance level with

Null hypothesis: x = 9.02 cm³

Alternate hypothesis: x < 9.02 cm³

A sample of 13 alcoholic adolescents gives the parameters

size=N= 13

mean=M= 8.12 cm³

standard deviation= s= 0.8 cm³

According to the sample, with 99% confidence, t statistic for the value X=9.02 can be found using the formula:

t=\frac{X-M}{\frac{s}{\sqrt{N} } } where

  • M is the sample mean (8.12)
  • s is the standard deviation of the sample (0.8)
  • N is the sample size (13)

If we put these numbers in the formula:

t=\frac{9.02-8.12}{\frac{0.8}{\sqrt{13} } } =4.056

One tailed critical value for the sample with 12 degrees of freedom (sample size-1) in 99% confidence level is 2.681.

Since t value (4.056) is bigger than the critical value, we fail to reject the alternate hypothesis, therefore reject the null hypothesis and accept alternate hypothesis.

5 0
3 years ago
A sphere has a volume of 36 (3.14) cm cube. what is the diameter of the sphere
Serga [27]

Answer:

<h2>Diameter = 6 cm</h2>

Step-by-step explanation:

The formula of a volume of a sphere:

V=\dfrac{4}{3}\pi R^3

We have V = 36(3.14) cm³ = V = 36π cm³. Substitute:

\dfrac{4}{3}\pi R^3=36\pi      <em>divide both sides by π</em>

\dfrac{4}{3}R^3=36           <em>multiply both sides by 3</em>

4R^3=108            <em>divide both sides by 4</em>

R^3=27\to R=\sqrt[3]{27}\\\\R=3\ cm

The diameter D = 2R.

Therefore D = 2(3 cm) = 6cm

3 0
3 years ago
F(x)=x3−x2 and g(x)=2x+10, then (g ∘ f)(3)=
RUDIKE [14]

Answer:

Step-by-step explanation:

f(3)= 3^3 - 3^2 = 27 - 9 = 18

g(18)= 2(18) + 10 = 36 + 10 = 46

5 0
3 years ago
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