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Evgen [1.6K]
3 years ago
5

This is very important, please help mee :)

Mathematics
1 answer:
Bogdan [553]3 years ago
7 0

Answer:

f(-1) = 3

Step-by-step explanation:

f(-1) means the value of y at x = -1.

So what's the value of y at x = 1?

First, focus on the graph and look at x = -1.

Next, see which y-value does graph pass through when x = -1.

Looks like the graph passes y = 3 when x = -1

Thus, f(-1) = 3

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Simplify 7 • 8 – 9 + 36 ÷ 3 <br> A) 45<br> B) 47<br> C) 57<br> D) 59
Gnoma [55]
D 59. Simple use of order of operations were needed.
6 0
4 years ago
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Two right triangles are shown. First, find the missing leg of the triangle on the right. Then you have two lengths to use to fin
jasenka [17]

Answer:

x = 30m

Step-by-step explanation:

<u>GIVEN :-</u>

There are 2 right-angled triangles.

In the triangle on the right side ,

  • Hypotenuse = 26m
  • Base = 10m

In the triangle on the left side ,

  • Base = 18m

<u>TO FIND :-</u>

  • Length of the common perpendicular to both triangles.
  • Length of the hypotenuse of the triangle on the left side.

<u>FACTS TO KNOW BEFORE SOLVING :-</u>

  • Hypotenuse = \sqrt{Base^2 + Perpendicular^2}.
  • Perpendicular = \sqrt{Hypotenuse^2 - Base^2}

<u>SOLUTION :-</u>

In the triangle on the right side ,

Perpendicular = \sqrt{26^2 - 10^2} = \sqrt{676 - 100} = \sqrt{576} = 24m

⇒ Perpendicular of the triangle on right side = Perpendicular of the triangle on left side.

In the triangle on the left side ,

Hypotenuse = \sqrt{24^2 + 18^2} = \sqrt{576 + 324} = \sqrt{900} = 30m

∴ x = 30m

3 0
3 years ago
Issac shovels driveways to earn money. He can shovel 14 driveways in 8 hours. Earns $25.00 for each driveway. Issac is saving up
bearhunter [10]

Answer:

19 hours

Step-by-step explanation:

Issac shovels driveways to earn money. He can shovel 14 driveways in 8 hours. Earns $25.00 for each driveway. Issac is saving up to buy a new computer that costs $831.25. How many hours does Issac need to work to earn enough money to purchase the computer?

Step 1 find the number of driveways to shovel

25x = $831.25

x = $831.25/25

= 33.25 driveways

Step 2

He can shovel

14 driveways = 8 hours

33.25 driveways = x

Cross Multiply

14x = 8 × 33.25

x = 8 × 33.25/14

x = 19 hours

6 0
3 years ago
The bake sale earned $83.48 during the 4 hours it was open. What is the unit rate?
shepuryov [24]
The answer is 20.87 when you divide it .
5 0
3 years ago
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-59 = -(b − -55) I keep getting these wrong on IXL... my brain hurts
Amanda [17]

-59 = -(b − -55)

Pretend that there is a -1 in front of the bracket.

-59= -1(b--55)

Multiply the bracket by -1

-59= -1(b)-1(--55)

-59= -b-55

Move -55 to the other side. Sign changes from -55 to 55

-59+55= -b-55+55

-59+55= -b

-4= -b

Multiply by -1

-4(-1)= -b(-1)

4= b

Answer: b= 4

7 0
3 years ago
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