3 years ago

I need help fast. Number 18 and 19

Mathematics

1 answer:

balu736 [363]3 years ago

3 0

Answer:

18.=400%

Step-by-step explanation:

80/20 we get 4 then we multiple 4 ×100 we get 400 and we check the answer 400% ×20 =80

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− 6/b −50=-49 what is b

Sedbober [7]

Answer:

-6

Step-by-step explanation:

-6/b-50=-49

step1;collect like terms

-6/b=-49+50

-6/b=1

step2;cross multiply

-6/b=1

-6=1b(1b can also be regarded as b)

b=-6

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3 years ago

WILL MARK BRAINLEST IF CORRECT HELP ME OUT

sveta [45]

Answer:

x = 12

Step-by-step explanation:

Equation: 0.52(x) + 0.72(4) = 0.57(x + 4)

0.52(x) + 0.72(4) = 0.57(x + 4) $\longmapsto$ Multiply

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2.88 = 0.05x + 2.28 $\longmapsto$ Subtract 2.28 from both sides

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x = 12

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A serving of ice cream contains 4200 calories.1260 calories come from fat what percent of total calories come from fat

algol [13]

Answer:

1260/4200 = 3/10 = 30%

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Find the value of X of the two problems below

rjkz [21]

Answer:

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According to the Rational Root Theorem, which is a factor of the polynomial f(x) = 60x^4 + 86x^3 - 46x^2 - 43x + 8?

Natalija [7]

Factors of 8 over factorsof 60, +/- one of them ay be a root

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