All categories

2 years ago

Solve. 45 + (-5) - 4 + 7 A: 45 B: 0 C: -34 D: 43

Mathematics

2 answers:

slamgirl [31]2 years ago

7 0

Answer:

D. 43

Step-by-step explanation:

45 + (-5) = 40

40 - 4 = 36

36 + 7 = 43

Helga [31]2 years ago

5 0

When you add negative, it’s the same as subtracting
45 - 5 - 4 + 7
40 - 4 + 7
36 + 7 = 43
The answer is D. 43

You might be interested in

The sides of an equilateral triangle are all 8 units long. What is the length of the triangle’s altitude?

True [87]

Answer:

B or 4 $\sqrt[]{3}$

Step-by-step explanation:

I could be wrong as I'm very new to this math but I believe its 4 $\sqrt{3}$

5 0

1 year ago

A square with a side length of x+6 has the same perimeter as an equilateral triangle with a side length of 4 x what is the area

prohojiy [21]

The perimeter of the equilateral triangle is 3s and s=4x so the perimeter is:

12x

And we are told that the perimeter of the square is the same. And that perimeter is 4s where s=(x+6) so that perimeter is equal to

4x+24, and again, we are told that these two values are equal so we can solve for x...

12x=4x+24

8x=24

x=3 and if x=3 then the side length is (x+6)=9

So the area of the square is always A=s^2 and s=9 thus:

A=9^2

A=81 u^2

7 0

2 years ago

A bag contains 5 red marbles, 10 blue marbles, and 14 yellow marbles. If Jen selects a marble from the bag without looking, what

Darina [25.2K]

Answer:

The answer to your question is 0.83 or 83%

Step-by-step explanation:

Data

5 red marbles

10 blue marbles

14 yellow marbles

Process

1.- Calculate the total amount of marbles

Total amount = 5 red + 10 blue + 14 yellow

Total amount = 29 marbles

2.- Calculate the amount of marbles that are not red

No red marbles = 10 + 14

= 24 marbles

3.- Calculate the probability

Probability of not pulling a red marble = $\frac{no red marble}{total amount of marbles}$

Probability of not pulling a red marble = $\frac{24}{29} = 0.83 or 83%$

5 0

2 years ago

Suppose y varies directly with x. If y = –20 when x = 2, find y when x = 14

Natasha_Volkova [10]

Answer:

y = -140

Step-by-step explanation:

Y varies directly with x

y = kx

We know y = -20 when x =2, we can solve for k

-20 = k*2

Divide each side by 2

-20/2= 2k/2

-10 =k

y = -10x

Now we want to find y when x = 14

y = -10 *14

y = -140

3 0

3 years ago

Read 2 more answers

Solve the volume of the box! Help ASAP also you get extra points <3.

olga2289 [7]

Answer:

22½ in³ or 22.5 in³

Step-by-step explanation:

V=bwh

V=5(3)(1.5)

V=15(1.5)

V=22.5

8 0

2 years ago