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3 years ago

2.8 Q10

Mathematics

1 answer:

grigory [225]3 years ago

5 0

The instructions are to find a solution set graphically, which I have attached. Substituting the two ordered pairs into the original system of equations proves that we solved correctly. I have also attached a step-by-step algebraic solution. Similarly, checking the solutions shows that there are no extraneous solutions.

The solution set is {0, 5}.

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Nora drew a scale drawing of the middle school. The scale she use was 1 inch: 7 feet. The gym is 17 inches in the drawing. How i

emmainna [20.7K]

Answer: 119

Step-by-step explanation: if it’s 1:7,

then you’d have to do 17x7

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3 years ago

HELP FAST PLS!! Drag each function to correct location on the image. Identify exponential functions.

slega [8]

Answer:

See the attached

Step-by-step explanation:

An exponential function has the variable in the exponent.

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3 years ago

Read 2 more answers

:( <br> A=?<br> B=?<br> please help me

Helen [10]

a= 16x+16

b= 40x + 15

Step-by-step explanation:

We know that perimeter of a rectangle is

$2(l + b)$

So therefore

$2(8x + 3 + 5) = a$

$= > 16x+ 6 + 10 = a$

$= > 16x + 16 = a$

Answer= A) that is perimeter is 16x+16

We know that area of a rectangle is l×b

So therefore

$(8x + 3) \times 5$

$= 40x + 15$

Answer = b) that is area is 40x + 15

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3 years ago

Suppose a house costs $270,000 appreciates by 5% each year. In about how many years will the house be worth $350000?

Vikki [24]

350000 = 270000(1.05)^n

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3 years ago

A tailor cuts 2 3/4 yards from a roll of fabric to make one curtain.

Otrada [13]

Answer:

You know, I really don’t like the 312 notation, I think it’s a lot more confusing than writing 3.5 or even 72. I’ll use the latter here, to make the math easier.

Okay, Erica started with 72 yards of fabric. Then, she uses 2/3 of that. But how much is 23 of 72? All you have to do is multiply!

72⋅23=146=73

Alright, she used 73 yards of fabric in the curtain, if you take that out of the total how much will be left?

72−73=21−146=76

Here it is, she will have 76 yards of fabric left. If you want the answer in that notation, it is 116.

You know, I really don’t like the 312 notation, I think it’s a lot more confusing than writing 3.5 or even 72. I’ll use the latter here, to make the math easier.

Okay, Erica started with 72 yards of fabric. Then, she uses 2/3 of that. But how much is 23 of 72? All you have to do is multiply!

72⋅23=146=73

Alright, she used 73 yards of fabric in the curtain, if you take that out of the total how much will be left?

72−73=21−146=76

Here it is, she will have 76 yards of fabric left. If you want the answer in that notation, it is 116.

7 0

3 years ago