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ElenaW [278]
3 years ago
9

The sum of two numbers is 19. The difference is 9. What are the two numbers?

Mathematics
2 answers:
Nostrana [21]3 years ago
7 0

Answer:

the two numbers are 8 and 8

s344n2d4d5 [400]3 years ago
4 0

Answer:

The 2 numbers for the sum are 9 and 10

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Math can you guys help me PLS
MissTica

Answer:

The surface area of the triangular prism is 84 square centimeters.

Step-by-step explanation:

The surface area of a figure is exactly what it means, the area of its outer surface or the added areas of each face that makes the figure.

Nets are a way to find surface area easier because it is an outline of the faces of the 3d figure.

But since we don’t have a net, we will just find the area of each face that forms this right triangular prism:

The two congruent triangular bases:

1/2 x 4 x 3 = 6 cm^2

6 x 2 = 12 cm^2

Lateral bottom rectangular face:

6 x 3 = 18 cm^2

Lateral to the right rectangular face:

5 x 6 = 30 cm^2

Lateral to the left rectangular face:

4 x 6 = 24 cm^2

Add up all the values:

12 + 18 + 30 + 24 = 84

The SA is 84 square centimeters

4 0
3 years ago
The family of functions y = ce^{-2x} + e^{-x} is solution of the equation y' + 2y = e^{-x}. Find the constant c which defines th
Rufina [12.5K]

Answer:

c = 1190.2

Step-by-step explanation:

We have the following solution:

y(x) = ce^{-2x} + e^{-x}

We want to find the value of x that satisfies the following condition:

y(3) = 3.

This means that when x = 3, y = 3. So

y(x) = ce^{-2x} + e^{-x}

y(3) = ce^{-2*3} + e^{-3}

3 = ce^{-6} + e^{-3}

3 = ce^{-6} + 0.0498

ce^{-6} = 2.9502

c = \frac{2.9502}{e^{-6}}

c = 1190.2

4 0
3 years ago
Two angles in a triangle measure (2.3x+25)° and (5.8x+11)°. what is the value of x if the two angles are congruent to one anothe
Anton [14]

Answer:

The answer is D. x= 4

Step-by-step explanation:

The angles are congruent so

2.3x +25 = 5.8x + 11

2.3x - 5.8x = 11 - 25

-3.5x = -14

x = 14/3.5

x = 4.

5 0
3 years ago
Read 2 more answers
If your teacher tells you to do questions 28 through 41 in your math book for homework, how many questions is that?
ANTONII [103]
41-28=13 questions, but you also have to do 41 and 28, so 15 questions
5 0
3 years ago
Read 2 more answers
Find the equation of the line that is perpendicular to the given line and passes through the given point.
liberstina [14]
Y= -1/5x-3
Y= -1/5x0-3
Y=-3
4 0
2 years ago
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