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Firlakuza [10]
3 years ago
14

Can someone help me please

Mathematics
1 answer:
lbvjy [14]3 years ago
8 0
Angle of elevation L = angle JKL (alternate interior) 55°

tan (angle JKL) = OPPOSITE SIDE / ADJACENT SIDE

tan(55°) = JL/26

1.4281 = JL/26 and JL = 26 x 1.4281 =37.13 or JL = 37.1
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Answer:

Name: ________________________ Class: ___________________ Date: __________ ID: A

Math 9 - Chapters 8 and 9 Review

Multiple Choice

Identify the choice that best completes the statement or answers the question.

1. Solve the following: 5s  4  22.

a. s=2.4

b. s=3.6

c. s=18

d. s=22

2. Solve 7.2 b  6.4  43.12.

a. b=5.1

b. b=6.88

c. b=13.6

d. b = 29.52

3. Solve 4.6(2.5a  2)  6.9.

a. a=1.4

b. a=2.76

c. a=23.0

d. a=3.56

4. Solve 2.3t  5t  9.99.

a. t = –1.37

b. t=1.37

c. t=3.7

d. t=4.34

6.

7.

8.

Brenda got a mark of 18 on her test. This mark was equal to 72%. How many marks was the test worth?

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b. 25 c. 30 d. 100

Anapplehas5mgofvitaminC.Abananahas2 mg more than twice the amount of vitamin C of an apple. If an orange has 3.5 times as much vitamin C as a banana, how much vitamin C does an orange have?

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The statement “The boy appears to be at least 10 years old” can be represented by the inequality a. a10

b. a10

c. a10 d. a10

Which inequality represents the statement, “The pilot was less than 1.9 m tall”?

a. h1.9

b. h1.9

c. h1.9 d. h1.9

4 1

5. Solve5w4.813.24w. 9.

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d. w=18

10. Express the inequality algebraically.

a. x12 b. x12

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1

Step-by-step explanation:

6 0
1 year ago
Write the number that can be shown with this Many hundreds, tens,and ones 1 hundreds 2 tens 18 ones
dem82 [27]

Answer: 139


Step-by-step explanation:

100+20=120+18=139

8 0
3 years ago
Find the standard equation for the circle having the given center and radius.
RoseWind [281]

\textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \hspace{5em}\stackrel{center}{(\underset{0}{h}~~,~~\underset{0}{k})}\qquad \stackrel{radius}{\underset{7}{r}} \\\\[-0.35em] ~\dotfill\\\\ ( ~~ x - 0 ~~ )^2 ~~ + ~~ ( ~~ y-0 ~~ )^2~~ = ~~7^2\implies x^2+y^2=49

7 0
2 years ago
Use the given information to find the unknown value:y varies inversely with a. When x = 4, then y= 4. Find y when I = 2.Iyy =hel
Mashutka [201]

Inverse variation:

y=\frac{k}{x}

k is a constant

Use the given information (when x=4 y=4) to find the value of the constant:

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Then, the given relationship has the next equation:

y=\frac{16}{x}

Use the equation above to find y when x=2:

\begin{gathered} y=\frac{16}{2} \\  \\ y=8 \end{gathered}Then, when x=2, y=8
3 0
1 year ago
Plsss Help me plsssssssssssss
Mazyrski [523]

Answer:

If, a = 2 and b = 3

<h3>Jada</h3><h3>10a + 1b = 7a + 5b  - 3a + 4b \\ 10(2) + 1(3) = 7(2) + 5(3) - 3(2) + 4(3) \\ 20 + 3 = 14 + 15 - 6 + 12 \\ 23 = 35 \\</h3>

It's not equivalent.

<h3>Diego</h3><h3>4a + 9b = 7a + 5b - 3a + 4b \\ 4(2) + 9(3) = 7(2) + 5(3) - 3(2) + 4(3) \\ 8 + 27 = 14 + 15 - 6 + 12 \\ 35 = 35 \\</h3>

It's equivalent.

The correct equation is 4a + 9b.

5 0
2 years ago
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