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4 years ago

What is the sum of fifteen and ten?

1 answer:

3 0

The sum of two numbers means that you need to add (+) them together,
so the sum of 15 and 10 is 15 + 10

. 1 5
+ 1 0 
2 5

The answer is 25

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Please help finals are tomorrow

Bogdan [553]

ΔQTR and ΔSTP are similar triangles. The corresponding sides of similar triangles are the same length.
TR = PT
TS = QT

Input the algebraic expression to make an equation system
PT = TR
y = 2x - 1 (first equation)

TS = QT
6x + 13 = 5y
6x - 5y = -13 (second equation)

Using subtitution method, subtitute y with 2x - 1 from first equation into the second equation, to find the value of x
6x - 5y = -13
6x - 5(2x - 1) = 13
6x - 10x + 5 = 13
-4x + 5 = 13
-4x = 13 - 5
-4x = 8
x = 8/-4
x = -2

Find y with subtituting x with -2 in the first equation
y = 2x - 1
y = 2(-2) - 1
y = -4 - 1
y = -5

Answer:
x = -2
y = -5

6 0

4 years ago

I really need help!Please help me!

solniwko [45]

Answer:

Photomath

Step-by-step explanation:

It looks like someone else is answering this for me so I'll just give ya a nudge. In the future as long as you can put it into an equation Photo math helped me a lot in Middle and Highschool.

5 0

3 years ago

On a number line, the coordinates of A, B, C, and Dare -6, -2, 3, and 7, respectively. Find

den301095 [7]

Answer:

9: not congruent AB=-8 and CD=10

10: not congruent AC=-3 and BD=5

11: congruent BC=1 and AD=1

5 0

3 years ago

Find the m<1 69 71 111 86

Alexxandr [17]

Answer:

Step-by-step explanation:

m1 = 180 - (180 - 39 - 30) = 180 - 111 = 69

3 0

3 years ago

An experiment consists of rolling two fair number cubes. What is the probability that the sum of the two numbers will be >3

liraira [26]

Answer: $\bold{\dfrac{5}{12}}$

Step-by-step explanation:

greater than 3 means the sum is either 4, 5, or 6.

There are 15 permutations that meet the criteria:

(1, 3), (1, 4), (1, 5), (1,6)

(2, 2), (2, 3), (2, 4), (2, 5), (2,6)

(3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3,6)

(4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4,6)

(5, 1), (5, 2), (5, 3), (5, 4), (5, 5), (5,6)

(6, 1), (6, 2), (6, 3), (6, 4), (6, 5), (6,6)

There are 6²= 36 total permutations for 2 dice.

$Probability=\dfrac{\#\ of\ permutations> 3}{total\ \#\ of\ permutations}\\\\.\qquad \qquad =\dfrac{15}{36}\\\\.\qquad \qquad =\dfrac{5}{12}\\\\$

3 0

3 years ago