2 years ago

Help pls :)) much appreciated

Mathematics

1 answer:

Ahat [919]2 years ago

6 0

Answer:

9,-7 hope this helps :))))))))

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Three times a number plus twice another is 10, while their sum is 10, Find the numbers

Aleks [24]

$3a+2b=10 \\\\ a+b=10 \\\\ \boxed{a=10-b} \\\\ 3(10-b)+2b=10 \\\\ 30-3b+b=10 \\\\ -b=10-30 \\\\ -b=-20 \\\\ \boxed{b=20} \\\\ a=10-20 \\\\ \boxed{a=-10}$

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3 years ago

A map has a scale of 3 in. = 16 mi. If you measured the distance between two cities to be 23 in. on the map, how many miles woul

Scrat [10]

Answer:

122.667

Step-by-step explanation:

23/3=7.667

7.667*16=122.667

8 0

2 years ago

Please answer correctly !!!!!!!! Will mark brainliest !!!!!!!!!!!

Alex17521 [72]

A. subtract the bottom equation from the top equation

Step-by-step explanation:

The elimination method for solving systems of linear equations uses the addition property of equality. You can add the same value to each side of an equation. So if you have a system: x – 6 = −6 and x + y = 8, you can add x + y to the left side of the first equation and add 8 to the right side of the equation.

// have a great day //

3 0

2 years ago

8/m-9=6/m-8<br><br>What does m equal?

liq [111]

Answer:

x=2

Step-by-step explanation:

you should isolate the variable and find out from what you have

4 0

2 years ago

The weekly incomes of a large group of executives are normally distributed with a mean of $2,000 and a standard deviation of $10

cestrela7 [59]

Let X be the weekly incomes of a large group of executives. The weekly incomes of a large group of executives follows Normal distribution with mean $2000 and standard deviation $100.

μ =2000, σ =100

We have to find z score for income $2100 i.e x=2100

Z = $\frac{x-mean}{standard deviation}$

= $\frac{2100 - 2000}{100}$

Z = 100/100

Z = 1

The z score for income $2100 is 1

6 0

2 years ago