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3 years ago

I NEED HELP ASAP PLEASE!!!!!

Mathematics

2 answers:

Bess [88]3 years ago

8 0

A

plug in x = -1 to both sides and you get 1 as the answer for both sides.

djverab [1.8K]3 years ago

7 0

Answer:

Step-by-step explanation:

If the graphs intersect at point (-1,1) we can substitute the equations to determine if the solutions will yield the point of intersection. Lets look at each equation and solve for x and y:

$3\cdot(x)+4=-2\cdot(x)-1$

$x=-1$

Substitute it into one of the equations:

$y=3\cdot(-1)+4=1$

Therefore the equations in choice at intersect at point (-1,1)

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Help w/math problem please!!! :)

Mars2501 [29]

Answers:
a.) 17t + 200
b.) 93 minutes

Explanation:
The initial volume of the pond is 200 gallons, so that is the y-intercept and included in the equation. The rate of 17 gal/min is written as 17t if t = time.
The full equations is 17t + 200.

To find when the pond will fill up you simply make 1781 equal to the equation:
1781 = 17t + 200
Then solve for t:
1781 – 200 = 17t + 200 – 200
1581 = 17t
1581 ÷ 17 = 17t ÷ 17
93 = t

8 0

3 years ago

You have 2\3 of a pizza left from yesterday. You divide it into 4 equal pieces. What fraction of the pizza is each piece?

Mrrafil [7]

Step-by-step explanation:

that means we divide 2/3 by 4.

2/3 / 4 = 2/3 / 4/1 = 2/3 × 1/4 = 2/12 = 1/6

so each quarter of the remaining 2/3 pizza is actually 1/6 of the complete pizza.

7 0

2 years ago

What is 1/2-5/13.....

Lerok [7]

1/2 - 5/13 = 3/26 = 0.115

Because: 1/2 - 5/13 = 1 x 13 ÷ 2 x 13 - 5 x 2 ÷ 13 x 2 = 13/26 - 10/26

13/26 - 10/26 = 13 - 10 ÷26 = 3/26 or 0.115.

Hope helps-Aparri

4 0

3 years ago

Please help!! I'll give 30 points and brainliest.

Valentin [98]

Step-by-step explanation:

$3 + \frac{9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{3 \times 4 + 9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{12 + 9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{21}{4} = \frac{9}{x+4} \\ \\ \therefore \:21(x + 4) = 36 \\ \\ \therefore \:21x + 84 = 36\\ \\ \therefore \:21x = 36 - 84\\ \\ \therefore \:21x = - 48\\ \\ \therefore \:x = \frac{-48}{21} \\ \\ \therefore \:x = \frac{-16}{7} \\ \\ \huge \red{ \boxed{ \therefore \:x = - 2 \frac{2}{7} }}\\ \\$

8 0

3 years ago

What is the slope of the line that passes through (5,-2) and (-3,4)

kolezko [41]

Answer:

Slope = $\frac{-3}{4}$

Step-by-step explanation:

(5 , -2) ; (-3, 4)

$Slope=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\=\frac{4-[-2]}{-3-5}\\\\=\frac{4+2}{-3-5}\\\\=\frac{6}{-8}\\\\=\frac{-3}{4}\\\\$

3 0

3 years ago