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3 years ago

FIRST (CORRECT) ANSWER I WILL GIVE BRAINLIEST

Mathematics

1 answer:

LenaWriter [7]3 years ago

8 0

Answer:

Explanation:

If you graph the points and connect them, you'll see the triangle they're asking about. Yhe base of the triangle is 9 and the height is 8. The area of a triangle is half of the base times the height. So multiply 8 by 9 and you get 72. This is twice the area. So divide it by 2 and you get 36, which is the area of the triangle. So the answer is A.

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A graph is shown below

andrezito [222]

We have that

using a graph tool
see the attached figure

case A) x − 2y > 3
this inequality represented the graph

case B) x − 2y < 3
this inequality not represented the graph

case C) 2x − y > 3
this inequality not represented the graph

case D) 2x − y < 3
this inequality not represented the graph

the answer is
the option A, x − 2y > 3

4 0

3 years ago

Read 2 more answers

Calibrating a scale:

lana66690 [7]

Answer:

We conclude that the calibration point is set too high.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 1000 grams

Sample mean, $\bar{x}$ = 1001.1 grams

Sample size, n = 50

Alpha, α = 0.05

Population standard deviation, σ = 2.8 grams

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 1000\text{ grams}\\H_A: \mu > 1000\text{ grams}$

We use One-tailed(right) z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{ 1001.1 - 1000}{\frac{2.8}{\sqrt{50}} } = 2.778$

Now, $z_{critical} \text{ at 0.01 level of significance } = 2.326$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. We accept the alternate hypothesis. We conclude that the calibration point is set too high.

6 0

3 years ago

Find the values of X and Y in an isosceles triangle where one angle is 47°

vladimir1956 [14]

Answer:

X and Y = 66.5°.

Step-by-step explanation:

I am assuming that X and Y are the base angles, which are equal in an isosceles triangle.

X = Y = (180 - 47) / 2

= 66.5°.

6 0

3 years ago

the ratio of the number of adults to the number of children in a library is 12:5 if there are 45 children in the library how my

anygoal [31]

I’m guessing 108. 45 divided by 5 is 9, so 9 times 12 is 108.

5 0

3 years ago

Read 2 more answers

Please help with number 11 please.

Tomtit [17]

Answer: 4/10

Step-by-step explanation:

2/5 = ?/10 As the amount of pieces correspond to the denominator

As 5x2 = 10

2x2 = 4

5 0

2 years ago