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MrRa [10]
3 years ago
15

Sydney needs to earn $35 so she can buy her father a birthday present. her mom said she can make $6 per hour cleaning around the

house and $5 per hour raking leaves. there are 6 hours available before sydney's father's birthday party where she can either clean or rake leaves. which system of equations can be used to find how many hours sydney should spend cleaning and raking leaves so that she will earn exactly enough money to buy her father a birthday present? let x represent the number of hours spent cleaning and y represent the number of hours spent raking leaves.
Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
4 0

Answer:

if i can be brainliest that would be great

f(x) = x^2+3x-10

f(x+5) = (x+5)^2+3(x+5)-10 ... replace every x with x+5

f(x+5) = (x^2+10x+25)+3(x+5)-10

f(x+5) = x^2+10x+25+3x+15-10

f(x+5) = x^2+13x+30

Compare this with x^2+kx+30 and we see that k = 13

Factor and solve the equation below

x^2+13x+30 = 0

(x+10)(x+3) = 0

x+10 = 0 or x+3 = 0

x = -10 or x = -3

The smallest zero is x = -10 as its the left-most value on a number line.

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I think so is it is not a right triangle or a specific type of triangle

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A 6 foot tall man makes a shadow that is 3 1/2 feet long. How tall is a building that makes a 14 7/8 foot shadow?
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6/3.5 = 14.875/x

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3 years ago
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jeyben [28]

Answer:

68 degrees

Step-by-step explanation:

This triangle is an isosceles triangle which means that two sides have equal lengths and when two sides have equal lengths that means that two angles are the same. so you add 56 and 56 together and you get a sum of 112. all triangles add up to a degree of 180, so you therefore subtract 112 from 180 which gives you an answer of 68 degrees , therefore x is 68

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3 years ago
$4,200 with a 35% markdown
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1, 470

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3 years ago
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Bad White [126]

Answer:

Shaded area is 392

Step-by-step explanation:

The triangles on the left have heights 14 and 14, the ones on the right have 20 and 8.

The bases are equal, so we can compute them as (40-12)/2 = 28/2 = 14

The triangles have areas:

14*14/2 = 14*7 = 98

14*14/2 = 14*7 = 98

20*14/2 = 20*7 = 140

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note that the triangles on the left and the ones on the right have the same total area! That would have happened no matter what the height split was!

The total area is 98+98+140+56 = 196 + 196 = 392

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3 years ago
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