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ivolga24 [154]
3 years ago
12

Simplify this expression: 13 + (–12) – (–5) = ?

Mathematics
2 answers:
Basile [38]3 years ago
7 0

Answer:

A - 6

Step-by-step explanation:

13 + (–12) – (–5)


= 13 - 12 + 5;


= 6

Trava [24]3 years ago
7 0

Answer:

<u><em>=6</em></u>

<u><em>A. 6.</em></u>

<u><em>*The answer must have a positive sign.*</em></u>

Step-by-step explanation:

This question's it's about the order of operations. It stands for parenthesis, exponents, multiply, divide, add, and subtract. It must go left too right.

First, do parenthesis.

13-12-(-5)

Then, you subtract left to right

13-12=1

1-(-5)

Finally, add left to right.

1+5=6

It change negative to positive sign.

=6

Hope this helps!

-Charlie

Have a great day!

Thanks!

:)

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If there bill was 58.65 and they gave a sever a 15% tip, how much did they pay altogether
masha68 [24]

Answer:

<u>$67.43 altogether</u>

Step-by-step explanation:

A 15% percent tip means 15% OF the bill.

15% of 58.65

0.15*58.65=8.7975

You can't really pay $8.7975, so you would round to the nearest one hundredth which is $8.78.

Now you add the $8.78 to $58.65 which will give you $67.43.

I hope that helps!


7 0
3 years ago
After graphing 4x-2y=5 and y=x, in how many points do they intersect
Angelina_Jolie [31]

Answer:

1 at (2.5, 2.5)

Step-by-step explanation:

you can try graphing it on desmo

3 0
4 years ago
What are the solutions of x2 - 2x +37 = 0 ?
ale4655 [162]

Answer:

-39/2 or -19 1/2

Step-by-step explanation:

3 0
3 years ago
A flying squirrel lives in a nest that is 9 meters high in a tree. To reach a fallen acorn that is 4 meters from the base of the
Luba_88 [7]

Answer:

Flying squirrel have to glide is for 9.8 meters approximately.

Step-by-step explanation:

Here we can use Pythagoras theorem.

Height is 9 , base is 4.

We need to find the hypotenuse measure.

So, let's use Pythagoras theorem a^{2} +b^{2}= c^{2}

Plug in a as 9 and b 4.

9^{2} +4^{2}=c^{2}

Simplify the left side of the equation

81+16=c^{2}

97=c^{2}

Take square root on both sides.

c=9.8 meters.

6 0
3 years ago
In the calm waters of an inlet, Manon's boat moves with a velocity (speed and direction) vector \vec{b_1} = (3,4) b 1 ​ ​ =(3,4)
andrew-mc [135]

Answer with Step-by-step explanation:

We are given that

b_1=(3,4)

b_2=(1,1)

We have to find the speed of river's current and the direction of current flowing.

b=b_2-b_1=(1,1)-(3,4)=(-2,-3)

Speed of river's current=\mid b\mid

Speed of river's current=\sqrt{(-2)^2+(-3)^2}

Speed of river's current=\sqrt{13} m/s

By using the formula

\mid r\mid =\sqrt{x^2+y^2}

Direction of current flowing,\theta=tan^{-1}(\frac{y}{x})

\theta=tan^{-1}(\frac{-3}{-2})=56.3^{\circ}

The angle lies in third quadrant therefore

\theta=180+56.3=236.3^{\circ}

3 0
3 years ago
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