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3 years ago

What is the y-intercept of a line that has a slope of 3 and passes through point (–1, –7)?

Mathematics

1 answer:

Stells [14]3 years ago

3 0

Answer:

y-intercept is -4

Step-by-step explanation:

(Refer to image)

Substitute the point and slope with the slope formula: y=mx+b and simplify

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Hansika paid $9.25 for 2.8 pounds of pretzels. About how much did she pay for a pound of pretzels? ( Round your answer to the ne

Maurinko [17]

Answer:

3.00

Step-by-step explanation:

Rounding down

5 0

3 years ago

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I need help, can someone please answer this for me please

blagie [28]

$\large \tt \: m = - \frac{3}{7}$

Detailed solution is attached!!~

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2 years ago

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Arun is twice as old as Shreet 5 years ago his age was three times shree age find their present ages

Mariulka [41]

Answer: Arun is now 20, Shree is 10 years old

Step-by-step explanation:

In the system of equations Arun's age is a. Shree is s

a = 2s .(current age equation) Subtract 5 from each for five years ago,

a-5 = 3(s-5) . Substitute 2s for a in the second equation

2s -5 = 3(s-5) distribute and reorganize

2s-5 = 3s -15 . 15 - 5 = 3s - 2s

10 = s . Substitute into the first equation to find a

a = 2(10)

a = 20

5 years ago Shree was 5 and Arun was 15

7 0

3 years ago

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Select the correct answer. Sean and Colleen are raking leaves in their yard. Working together, they can clear the yard of leaves

Lera25 [3.4K]

Answer:

40 minutes

Step-by-step explanation:

Let c represent the number of minutes it would take colleen to finish the job when he is working alone. Hence, it can be represented by the equation:

$\frac{1}{c}+\frac{1}{c+20} =\frac{1}{24} \\\\Finding\ the\ L.C.M\ of\ the\ fraction\ to\ get\ 24c(c+20)\ as\ the\ L.C.M.\\Multiply\ the\ whole\ equation\ by\ 24c(c+20):\\\\\frac{1}{c}(24c(c+20))+\frac{1}{c+20}(24c(c+20)) =\frac{1}{24}(24c(c+20)) \\\\24c+480+24c=c^2+20c\\\\48c+480=c^2+20c\\\\c^2+20c-48c-480=0\\\\c^2-28c-480=0$

Solving the quadratic equation to get c gives:

c = -12 and c = 40

Since the time cannot be negative, hence c = 40 minutes.

It would take colleen 40 minutes to clear the yard of leaves alone

6 0

3 years ago

PLEASE HELPP!!! Please

seraphim [82]

Answer:

a: the second choice, and pounds=10

b. the second choice, and points=90.

Step-by-step explanation:

for a , you just divide the pounds by the price and you get 5 for each.

for b, you just divide the points by the tickets and you get 9 each.

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2 years ago