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dexar [7]
3 years ago
9

What is the cost of an $8,000 car including 5½% tax?

Mathematics
1 answer:
mina [271]3 years ago
6 0

Answer:

$8,440

Step-by-step explanation:

5.5% of 8,00 = 440

8,000 + 440 = 8,440

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Help with Math Please... need in 5 min or less.
hoa [83]

Answer:

\sqrt{61}

Step-by-step explanation:

We see that diagonal AB is also the hypotenuse of a triangle where the other 2 side lengths are 4 and sqrt{45}. Using the Pythagorean theorem, we get that diagonal AB is  \sqrt{61}

3 0
2 years ago
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Simplify the expression -3(x+3x. What is the simplified expression in standard form?
Morgarella [4.7K]

Answer:

- 3(x + 3x) \\  - 3x - 9x =  - 12x \\ the \: answer =  \:  - 12x

please give brainliest

4 0
3 years ago
Point Q is on line segment PR. Given QR=11 and PQ=3, determine the length PR.
klio [65]

Answer:

\huge \boxed{14}

Step-by-step explanation:

Q is a point on the line segment PR.

PQ = 3

QR = 11

PR = PQ + QR

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3 0
2 years ago
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An explosion causes debris to rise vertically with an initial speed of 120 feet per second. The formula h equals negative 16 t s
Novay_Z [31]

Answer:

The debris will be at a height of 56 ft when time is <u>0.5 s and 7 s.</u>

Step-by-step explanation:

Given:

Initial speed of debris is, s=120\ ft/s

The height 'h' of the debris above the ground is given as:

h(t)=-16t^2+120t

As per question, h(t)=56\ ft. Therefore,

56=-16t^2+120t

Rewriting the above equation into a standard quadratic equation and solving for 't', we get:

-16t^2+120t-56=0\\\textrm{Dividing by -8 throughout, we get}\\\frac{-16}{-8}t^2+\frac{120}{-8}t-\frac{56}{-8}=0\\2t^2-15t+7=0

Using quadratic formula to solve for 't', we get:

t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\t=\frac{-(-15)\pm \sqrt{(-15)^2-4(2)(7)}}{2(2)}\\\\t=\frac{15\pm \sqrt{225-56}}{4}\\\\t=\frac{15\pm\sqrt{169}}{4}\\\\t=\frac{15\pm 13}{4}\\\\t=\frac{15-13}{4}\ or\ t=\frac{15+13}{4}\\\\t=\frac{2}{4}\ or\ t=\frac{28}{4}\\\\t=0.5\ s\ or\ t=7\ s

Therefore, the debris will reach a height of 56 ft twice.

When time t=0.5\ s during the upward journey, the debris is at height of 56 ft.

Again after reaching maximum height, the debris falls back and at t=7\ s, the height is 56 ft.

5 0
3 years ago
How do you do 8b+12-b=8+7b+4 and plz show how you got it
lawyer [7]
8b+12-b=8+7b+4
7b+12=12+7b
                 -7b
7b-7b+12=12
          -12   -12
0= 12-12
0=0
6 0
3 years ago
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