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Kisachek [45]
3 years ago
8

Evaluate the expression 7x-10

Mathematics
1 answer:
RoseWind [281]3 years ago
4 0

Answer:

-3x

Step-by-step explanation:

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Which equation represents a line that passes through (2, –0.5) and has a slope of 3?
Kitty [74]
A slope of 3 means the gradient is 3 so we get y=3x+c as derived from the linear formula. we then sub in x=2 and y=-0.5. this gives us c=-6.5.

The equation would be y=3x-6.5

I think this is right.
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3 years ago
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Your bank account has -15 in it. You deposit $7 per day. (a) How much money is in your account after 5 days? Show your work. (b)
Ugo [173]

(a) 7 x 5 = 35 - 15 = $20

(b) 20 / 4 = 5 days

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8. Lilly paid $19.16 for a 1kg apple basket. This amount includes a tax of 3%. What was the cost of the apple before tax?
Maslowich

Answer:

19.75. The apples cost 19.75 before the tax.

Step-by-step explanation:

0.97(x)=19.16

19.75

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3 years ago
Which radical expression is an irrational number? A. √ 121 B. √ 65 C. √ 36 D. √ 64
alina1380 [7]

We will verify each options

option-A:

\sqrt{121}

we can factor it

\sqrt{121}=\sqrt{11*11}

\sqrt{121}=\sqrt{11^2}

\sqrt{121}=11

so, this is not irrational.........Answer

option-B:

\sqrt{65}

Since, it can not be factored

so, this is irrational.........................Answer

option-C:

\sqrt{36}

we can factor it

\sqrt{36}=\sqrt{6*6}

\sqrt{36}=\sqrt{6^2}

\sqrt{36}=6

so, this is not irrational.........Answer

option-D:

\sqrt{64}

we can factor it

\sqrt{64}=\sqrt{8*8}

\sqrt{64}=\sqrt{8^2}

\sqrt{64}=8

so, this is not irrational.........Answer


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4 years ago
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Abbie spent 5/8 of her money and saved the rest. If she spent $45. how much money did she have at first?
shutvik [7]
She had 80 dollars at first.80/80 equals to 8/8 and that equals to 64 dollars. 5/8 equals to 45
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3 years ago
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