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a_sh-v [17]
3 years ago
9

Can someone please help?

Mathematics
1 answer:
kifflom [539]3 years ago
5 0
Standard form means, move the variables to the left-hand-side and leave the constant all by herself on the right-hand-side, usually sorting the variables, so"x" goes first.

now, there's a denominator, we can do away with it, by simply multiplying both sides by the denominator, so let's do so,

\bf y=-\cfrac{2}{3}x+7\implies \boxed{3}\cdot y=\boxed{3}\cdot \left( -\cfrac{2}{3}x+7 \right)\implies 3y=-2x+21
\\\\\\
\stackrel{standard~form}{2x+3y=21}
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r = 13.1 km., d = ? , C = ? a. d = 26.2 km, C = 82.31 km c. d = 6.55 km, C = 82.31 km b. d = 26.2 km, C = 41.15 km d. d = 6.55 k
DENIUS [597]
Answer is <span>a. d = 26.2 km, C = 82.31 km

D = 2r = 2 x 13.1 = 26.2
C = 2pi r  = 2 x </span>3.14159265359 x 13.1
C = 82.31

7 0
3 years ago
PLZ HELP I BEEN SUCK FOE SO LONG PLZ RIGHT ANSWER I WILL CRY
mel-nik [20]

Answer:

40 students

Step-by-step explanation:

In this problem, one is given the ratio ( 8 : 3 ), since a ratio is another way of writing a fraction one can rewrite it as; \frac{8}{3} (8) represent the number of students who want to learn about magnets, and (3) represents the number of students who want to learn about magic tricks.

In the problem, it is also given that 25 more students wanted to learn about magnets compared to magic tricks. If one uses the parameter (x) to represent the factor by which the fraction \frac{8}{3} is reduced, then one can get the equation;

8x = 3x + 25

Use inverse operations to solve,

8x = 3x + 25

-3x

5x = 25

/5

x = 5

Substitute back in to find out how many students want to learn about magnets,

8x

= 8(5)

= 40

3 0
2 years ago
Emily is entering a bicycle race for charity. Her mother pledges $0.80 for every 0.25 mile she bikes. If Emily bikes 5 miles, ho
e-lub [12.9K]

Answer:

i think the answer is one of the two answers $16 or $20.50. Sorry if it is wronge.

8 0
2 years ago
Which of the following is the ratio of boys to girls in tamir's math class?
WARRIOR [948]
The answer for your question is 12/15
4 0
3 years ago
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5. Use each integer to describe a situation.<br> a) +5000:<br> b) -5:
gtnhenbr [62]

Answer:

A) +5000

Step-by-step explanation:

I'm not sure of my answer but

hope that help

7 0
2 years ago
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