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Liula [17]
3 years ago
7

The sum of two numbers is 20. Their difference is 4. What are the numbers? Use the variable A & B

Mathematics
2 answers:
Phantasy [73]3 years ago
6 0

Answer:

Step-by-step explanation:

A+B=20

12 and 8

There is a difference of 4 between them and they add up to 20.

Arturiano [62]3 years ago
3 0

Answer:

x + y = 20

x - y = 4

Add the 2 equations and get

2x = 24

x = 24/2 = 12

Plug x=12 into either equation and get

y = 8

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Find the 7th term of the sequence
NikAS [45]

Answer:

3rd option, 4096

Step-by-step explanation:

4⁰ = 1, 1st term

4¹ = 4, 2nd term

4² = 16, 3rd term

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4⁶ = 4096, 7th term

Answered by GAUTHMATH

8 0
3 years ago
Two piecewise functions are shown below. What is the value of
gizmo_the_mogwai [7]

Step-by-step explanation:

I am not sure what your problem here is.

you understand the inequality signs ?

anyway, to get

6×f(-2) + 3×g(1)

we can calculate every part of the expression separately, and then combine all the results into one final result.

f(-2)

we look at the definition.

into what category is -2 falling ? the one with x<-2, or the one with x>=-2 ?

is -2 < -2 ? no.

is -2 >= -2 ? yes, because -2 = -2. therefore, it is also >= -2.

so, we have to use

1/3 x³

for x = -2 that is

1/3 × (-2)³ = 1/3 × -8 = -8/3

g(1)

again, we look at the definition.

into what category is 1 falling ? the one with x > 2 ? or the one with x <= 1 ?

is 1 > 2 ? no.

is 1 <= 1 ? yes, because 1=1. therefore it is also <= 1.

so we have to use

2×|x - 1| + 3

for x = 1 we get

2×0 + 3 = 3

6×f(-2) = 6 × -8/3 = 2× -8 = -16

3×g(1) = 3× 3 = 9

and so in total we get

6×f(-2) + 3×g(1) = -16 + 9 = -7

3 0
2 years ago
What is the defination of the focus when referring to a parabola?
Len [333]

Answer:

Focus of a Parabola. A parabola is set of all points in a plane which are an equal distance away from a given point and given line. The point is called the focus of the parabola and the line is called the directrix. The focus lies on the axis of symmetry of the parabola.

Step-by-step explanation:

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3 years ago
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77julia77 [94]

Answer:

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Step-by-step explanation:

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2 years ago
Anna, Irina, Avel, and Vlad are going on a road trip. The following table shows an incomplete probability model for who will be
Tanzania [10]

Answer:3/8

Step-by-step explanation:Khan academy

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3 years ago
Read 2 more answers
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