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6 months ago

Hayley, James, and Tabby have a sticker collection. James has 7 more stickers

Mathematics

1 answer:

babymother [125]6 months ago

6 0

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

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

a. 24

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?

a. 7mg

b. 12mg

c. 24.5 mg

d. 42mg

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.

a. w=8

b. w=8.4

c. w=16

d. w=18

10. Express the inequality algebraically.

a. x12 b. x12

c. x12 d. x12

Step-by-step explanation:

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200x - y + 500= 0<br><br>Put it in Y=mx + b form<br><br><br><br>

blondinia [14]

Answer:

Step-by-step explanation:

1. Put y on the other side - 200x + 500 = y

y= 200x +500

See, this works because -y, when bringing it to another side, you would be adding it. That cancels out the negative, giving you your slope-intercept form. All you have to do is flip it into y=mx + b form, and that's how you get y=200x + 500

7 0

2 years ago

What is 33 percent of 400

Eduardwww [97]

<h2>QUESTION</h2>

What is 33% of 400?

<h2>ANSWER AND EXPLANATION</h2>

To find the percent of a number, you have to change the percent into a decimal or a fraction and multiply by the number.

<h3>DECIMAL</h3>

To change a percent into a decimal, remove the percent sign and move the decimal point 2 places to the left.

$33 \% \rightarrow 0.33$

Now that you have your decimal, multiply by 400:

$0.33 \times 400 = 132$

ANSWER = 132

<h3>FRACTION</h3>

To change a percent into a fraction, make the percent number as the numerator(top number) and 100 as the denominator(bottom number) since fractions are out of 100.

$33 \% \rightarrow \frac{33}{100}$