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1 year ago

Need help with this question (pic included)

Mathematics

1 answer:

nikitadnepr [17]1 year ago

4 0

Answer:

answer= 3

hope this helps if not I'll try to do it again

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If 81 is added to a number the result is 39 less than three times the number

Deffense [45]

let x =the number

Step-by-step explanation:

81+x=3x-39

group like terms

81+39=3x-x

120=2x

120/2=2x/2

60=x

therefore x =60

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3 years ago

Read 2 more answers

Jenny studied the characteristics of two species of bacteria. The number of bacteria of species A, A(t), after t hours is repres

fredd [130]

Answer: D . $N(t) = 3 + (0.25t)^3 - 8(1.06)^t$

Step-by-step explanation:

Given : Jenny studied the characteristics of two species of bacteria. The number of bacteria of species A, A(t), after t hours is represented by the function,

$A(t) = 5 + (0.25t)^3$

The number of bacteria of species B, B(t), after t hours is represented by the function, $B(t) = 2 + 8(1.06)^t$

Then, the difference in the number of bacteria, N(t), of both the species after t hours will be :-

$N(t)=A(t)-B(t)\\\\=5 + (0.25t)^3-(2 + 8(1.06)^t)\\\\=5 + (0.25t)^3-2-8(1.06)^t\\\\=5-2 +(0.25t)^3-8(1.06)^t\\\\=3+(0.25t)^3-8(1.06)^t$

Hence, the correct answer should be : D . $N(t) = 3 + (0.25t)^3 - 8(1.06)^t$

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3 years ago

What is the volume of a sphere if it has a radius of 3 centimeters? (Use 3.14 for TT.)

snow_tiger [21]

Answer:

9.52

Step-by-step explanation:

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2 years ago

What is 33 photos into two grours so the ratio is 4 to 7

Keith_Richards [23]

$ratio:\\4:7\to4+7=11\\\\33:11=3\\\\therefore\\\\4:7\\\downarrow\\4\times3=12\\7\times3=21\\\\Answer\huge\boxed{12:21}$

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3 years ago

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Use the expression 9(7 + 2x) to answer the following:

oksian1 [2.3K]

Part A: Describe the two factors in this expression. (4 points) The factors are (1) the constant coefficient 9 and (2) the binomial (7+2x).

Part B: How many terms are in each factor of this expression? (4 points) The first factor (multiplicand), 9, has one term. The second factor (multiplicand), (7+2x), has two terms (and is thus called a binomial).

Part C: What is the coefficient of the variable term? (2 points) The only such coefficient is 2.

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2 years ago