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4 years ago

A line has slope 2/3 and y–intercept −2 which answer is the equation of the line?

Mathematics

1 answer:

NNADVOKAT [17]4 years ago

8 0

The answer for this is D

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Granny has taken up deep-sea fishing! Last week, she caught a fish so big that she had to cut it into 3 pieces (head, body and t

Marianna [84]

Answer:

54kg

Step-by-step explanation:

Body weight = B

Tail weight = T

Head weight = H

Total weight = F

Use equation = B + T + H = F

We are told that T = 9kg, H = T + (1/3) x B, B = H + T

We have 3 equations and 3 unknowns, solve the system of equations to find W.

B = H + 9

H = 9 + 1/3 x (H+9)=9+H/3+3 --> 2/3 x H = 12 --> H = 18

B = 18 + 9 = 27

F = 18 + 27 + 9 = 54kg

4 0

3 years ago

Find the length of the hypotenuse of a right triangle whose legs are 3 and . 2

lapo4ka [179]

Answer:

The answer would be 3.606, but rounded is 3.61, or 3.6

Step-by-step explanation: A^2+B^2 = c^2, so 3x3=9

2x2=4,

9+4=13

Then square 13, which would give you 3.606

8 0

3 years ago

4<br>-5a+b=8<br>7a +9b = -32<br>I need to use substitution for this one. Help?

Sauron [17]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}-5a+b=8&\text{add}\ 5a\ \text{to both sides}\\7a+9b=-32\end{array}\right\\\\\left\{\begin{array}{ccc}b=5a+8&(1)\\7a+9b=-32&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\7a+9(5a+8)=-32\qquad\text{use the distributive property}\\\\7a+(9)(5a)+(9)(8)=-32\\\\7a+45a+72=-32\qquad\text{subtract 72 from both sides}\\\\52a=-104\qquad\text{divide both sides by 52}\\\\\boxed{a=-2}\\\\\text{Put the value of}\ a\ \text{to (1):}\\\\b=5(-2)+8\\\\b=-10+8\\\\\boxed{b=-2}$

8 0

3 years ago

2x+5=6-x could someone help me please?

Artist 52 [7]

Answer:

x=1/3

Step-by-step explanation:

Add x to both sides, 3x+5=6

Subtract five from both sides

3x=1

Divide both sides by 3

x=1/3

7 0

4 years ago

Zoya sells insurance. She earns $10,25/hour and 8% commission on all her sales. Last week

Vlad1618 [11]

Answer:

$523.39

Explanation:

10.25 x 35 hours= 358.75

2058 x 8/100 = 164.64

358.75 + 164.64 = 523.39

8 0

3 years ago