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2 years ago

11

Helpppppppppp me plzzzzzz

2 answers:

Fittoniya [83]2 years ago

8 0

Answer:

the question is linear equation in two variables so the answer is infinitr first we will be x zero and y will be -9 and second y is zero x will be 15 by this system we get many answers

MakcuM [25]2 years ago

7 0

Answer:

3x - 5y = 45

Step-by-step explanation:

divide all numbers by 4

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Two angles of a triangle measure 55° and 20°.

PolarNik [594]

The answer is c because of the fact that if the 2 angles at 55 and 20 that means that you have to add them together and get to 180 for the triangle to be true

4 0

3 years ago

The sum is not divisible by 5 and not divisible by 6.

PilotLPTM [1.2K]

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5 0

2 years ago

The diameter of a sphere with a volume of 12,348 cubic ft is ___ ft.

aniked [119]

Answer:

108.62ft

Step-by-step explanation:

12348=⁴/3×3.14×r²

r²=12348×¾÷3.14

r²=2,949.36

r=squareroot of 2,949.36

r=54.308

d=2r

d=54.308×2

d=108.616

6 0

2 years ago

The diagram shows a dilation of line AB

Orlov [11]

Answer:

1. OA= 2.0 OA’= 3.0

2. OB= 3.0 OB’= 4.5

3. AB= 2.2 A’B’= 3.3

4. 1.5

5. 1.5

6. 1.5

7 0

3 years ago

Read 2 more answers

A researcher wants to test if the mean annual salary of all lawyers in a city is different from $110,000. A random sample of 50

KiRa [710]

Solution :

This is the two tailed test.

The null hypothesis and the alternate hypothesis is as :

Null hypothesis is $H_0:\mu=110000$

Alternate hypothesis is $H_0:\mu \neq110000$

$\overline x = 112000, \ \mu = 110000, \sigma = 16100, n = 50, \alpha = 0.02$

Therefore, the critical value of z is :

$z_{\alpha} = -2.33 \text{ and}\ 2.33$

Now the test statics is :

$z=\frac{\frac{(\overline x - \mu)}{\sigma}}{\sqrt n}$

$z=\frac{\frac{(112000-110000)}{16100}}{\sqrt {50}}$

$z=0.87$

The test statics is 0.878

We see that it is a right tailed test.

$$P(z > 0.878)=1-P(z$

$P- \text{value}= \ 2 \times 0.19$

= 0.3800

Thus , P-value > α

So we fail to reject the null hypothesis.

5 0

2 years ago