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tigry1 [53]
3 years ago
5

Help me pls working on quizizz :(

Mathematics
2 answers:
nexus9112 [7]3 years ago
8 0

here your answer mate

3.25

hope it helps ☺️✌️

Alex787 [66]3 years ago
6 0

Answer:

3.25

Step-by-step explanation:

16/13 = 4/r

16 × r = 13 × 4

16r = 52

r = 52/16 = 3.25

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In a political science class, test scores were determined to be 20 times the number of hours, h, the student studied plus 3.
V125BC [204]

Answer:

S = 20h + 3

Step-by-step explanation:

It is seen in a political science class that the test score were determined to be 20 times the number of hours, h, the student studied plus 3.

Hence, the condition can be modeled by the equation

S = 20h + 3

where, S represents the score of a particular student who studied h hours before the test. (Answer)

7 0
3 years ago
If sales tax of a state is 8% what is the price of a $400 punching bag
Y_Kistochka [10]

Answer:

$32

Step-by-step explanation:

400 dollars

10 percent of 400=40

5 percent of 400=20

1 percent of 400=4

4 times 8=32

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3 years ago
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zloy xaker [14]

ummm...... 4 hahahahaha

7 0
2 years ago
I need the angle measurements for each letter in this image
Blizzard [7]

Answer:

To find c you know that angles on a straight line equal 180° (supplementary angles). So 70+30+∠C=180.

Now we can solve this.

100+c=180.

Move the 100 over to the other side.

100-100+c=180-100

Simplify.

∠C=80°

Because we know that the two lines with double arrows are parallel, we can use the rule that alternate interior angles are congruent. This means that ∠E=70.

∠E=70°

Since the total sum of the angles in a triangle are equal to 180°, we know that ∠D+∠C+∠E=180. Because we already know ∠C and ∠E we can put those numbers in for them. 80°+70°+∠D=180°. Now we can solve this.

80+70+D=180

Simplify this.

150+D=180

Now we move the 150 over to the other side to get D by itself.

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D=30

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Now we can find the vertical angle opposite ∠A by using the alternate interior angles rule again this time using the parallel lines with only one arrow on them. The vertical angle opposite ∠A=30°. Since vertical angles are congruent ∠A=30°.

∠A=30°

We are going to use the alternate angles rule one more time to solve for ∠B (this rule is very important when dealing with parallel lines), we could also use the corresponding angles rule but for simplicity we will just stick with the alternate angles rule. Because the vertical angle opposite ∠A is equal to 30°, we can see that the supplementary angle opposite ∠B=30°. Because this angle is supplementary with B we know that 30+B=180.Now we can solve this.

30+B=180

Now we move the 30 over to the other side.

30-30+B=180-30

Simplify.

B=150

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I hope this helps!

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2 years ago
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Answer:

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Step-by-step explanation:

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