MATHEMATICS HIGH SCHOOL

20% of what number is 7

Answers

Answer 1
Answer: (20/100)(number) = 7;
Then, (1/5)(number) = 7;
number is 5 x 7 = 35.
Answer 2
Answer:

Answer:

35

Step-by-step explanation:

7 times 5 is your answer

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Write an equation
Eight times the sum of m and 7 is 21

Answers

Answer:

the equation would be 8(m+7)=21
8 ( m + 7 ) = 2 1
your welcome ! <3

Help me with 1,2,3 :)

Answers

1.) 4x and 9 are terms in 4x + 9

2.) The number line represents a solution to an equation.

3.) 9 is a constant in 2n - 6m + 9

If tanx = 0.75, find the value ofi. cos2x + sin2x
2tanx
ii.
for 0° < x < 90°
C0Sx-sinx
-

Answers

Answer:

i. 31/25

ii. 1/5

Step-by-step explanation:

you know that tanx = 3/4, so you can also find that sinx = 3/5 and cosx = 4/5. Then you can use the double angle identities to find cos2x and sin2x: cos^2(x) - sin^2(x) + 2sinxcosx and substitute the givens to get 31/25. Then, cosx - sinx is obviously 1/5.

Calvin and Melvin are two of Santa's elves. The number of toys they build is given by 11c + 9m where c is the number of candy canes Calvin eats for breakfast and m is the number of candy canes Melvin eats for breakfast.How many toys do they build when Calvin eats 5 candy canes and Melvin eats 3 candy canes for breakfast? :)

Answers

just substitute  c=5  Calvin's candy canes  and m=3  Melvin's candy canes

11c + 8m = 11*5 + 8*3 = 55 + 24 = 79
so they built 79 toys i hope it helps

Which measurement is the best estimate for the mass of a penny?A : 2.5 mg

B : 2.5 g

C : 2.5 kg

Answers

B is correct - 2.5g :)

Sandy has 16 roses, 8 daisies, and 32 tulips. She wants to arrange all the flowers in bouquets. Each bouquet has the same number of flowers and the same type of flower. What is the greatest number of flowers that could be in a bouquet?

Answers

Total trick question!! This can be answered multiple ways. First, one would think 7 because 16 roses, 8 daisies, and 32 tulips equal 56 total flowers and if divided equally into bouquets you would have 8 bouquets each with 2 roses, 1 daisy, and 4 tulips. That gives you the same type of flower in each bouquet along with the same amount of flowers in each bouquet. However, you can also have 8 of each type of flower in a bouquet. For example, 2 bouquets with 8 roses each, 1 bouquet with 8 daisies, and 4 bouquets with 8 tulips each.

Answer: For E2020 is B

P(tulip)= 37/86
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