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3 years ago

How to solve this one

Mathematics

1 answer:

xxMikexx [17]3 years ago

7 0

Answer:

2x + y =6

x + 2y = —6

Step-by-step explanation:

I hope that's help

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last month, margaret's puppy had a change in weight of -9 ounces. which does not show a greater change in weight? loss of 10 pou

Nookie1986 [14]

Since she already had an integer you do (-9)-10=-19 Then you would do (-19)-8=-27 Then you do -27 + 14=-13 Then -13 + 12=-1 or you can just do -27 + 14 + 12=-1. That's the answer

4 0

2 years ago

What is the lowest common multiple of 24 and 40

geniusboy [140]

24 = 4*6 = 2*2 * 2 *3

40 = 4*10 = 2*2 *2 *5

least common multiple is 2*2*2*3*5

120

6 0

3 years ago

Its me arg i need help

Alex787 [66]

Answer:

x=8

Step-by-step explanation:

so since the whole thing should equal 180, and the right triangle is 90,

(3x+11)+(5x+15)=90 then solve for that

8x+26=90

8x=64

divide both sides by 8

so x=8

then plug in 8 for the xs so c is 3(8)+11 --> 24+11 so m<C=35*

m<D=90*

5(8)+15 40+15 so m<E=55

7 0

2 years ago

Read 2 more answers

A sample of 20 account balances of a credit company showed an average balance of $1,170 and a standard deviation of $125. You wa

Lady_Fox [76]

Answer:

The P-value for this test is P=0.2415.

Step-by-step explanation:

We have to perform an hypothesis testing on the mean of alla account balances.

The claim is that the mean of all account balances is significantly greater than $1,150.

Then, the null and alternative hypothesis are:

$H_0: \mu=1150\\\\H_a: \mu>1150$

The sample size is n=20, with a sample mean is 110 and standard deviation is 125.

We can calculate the t-statistic as:

$t=\dfrac{\bar x-\mu}{s/\sqrt{n}}=\dfrac{1170-1150}{125/\sqrt{20}}=\dfrac{20}{27.95}=0.7156$

The degrees of freedom fot this test are:

$df=n-1=20-1=19$

For this one-tailed test and 19 degrees of freedom, the P-value is:

$P-value=P(t>0.7156)=0.2415$

8 0

3 years ago

What is the volume of a hemisphere with a radius of 30.8 cm, rounded to the nearest tenth of a cubic centimeter?

den301095 [7]

61194.2707cm³
I suck at rounding so this is the answer not rounded

4 0

3 years ago

How to solve this one​

How to solve this one