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2 years ago

50 points Find the value of t ift-7= 12.

Mathematics

2 answers:

shutvik [7]2 years ago

8 0

Answer

t=19

Step-by-step explanation:

12+7= 19

19 -7 =12

U 2 can help me by marking as brainliest........

Step2247 [10]2 years ago

5 0

Answer:

T is 19

Step-by-step explanation:

You have to take away 7 to get 12. And to check it you do 12 take away 7, add 7 to 12 and you get 19.

So 19-7=12

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Harry purchased some fruits and sold 1/2 of them at a gain of 60% and 1/4 of them at a gain of 20%, the rest were spoiled. Find

kherson [118]

Answer: 35%

Step-by-step explanation:

Let the original price be "4x".

60% gain on 1/2 of them will be:

(1.60 × 2x) = 3.2x - 2x = 1.2x

20% gain on (1/4) of them will be:

(1.2 × x) = 1.2x - x= 0.2x

Total gain 1.2x + 0.2x = 1.4x

Total gain percent= Gain/Original price =1.4x/4x = 0.35 = 35%

5 0

3 years ago

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What is the unit rate

Andrew [12]

Answer:15 1/2 miles per gallon

Step-by-step explanation:

Since you want to find the unit rate you have to find the miles per gas.

You divide and get 15 1/2miles per gallon

7 0

3 years ago

A swimming pool measures 35 feet wide by 50 feet long. What is the ratio of the length to the perimeter in simplest form?

seropon [69]

Answer:

i think it is 5:17

Step-by-step explanation:

length=50

perimeter=170

the highest factor of 50 and 170 is 10 so the answer will be 5:17

hopefully this made sense

6 0

3 years ago

The shoe store’s clerks are paid on commission. If the clerk receives a 12% commission on total purchase amounts before tax is a

natka813 [3]

Answer:

7.11 and 9.48

Step-by-step explanation:

.12 is equal to 7.11

with out coupon

.12 is equal to 9.48

with the coupon

<em>hope the answer helped:)</em>

5 0

3 years ago

Read 2 more answers

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.

likoan [24]

Answer:

Thus, the two root of the given quadratic equation $x^2+4=6x$ is 5.24 and 0.76 .

Step-by-step explanation:

Consider, the given Quadratic equation, $x^2+4=6x$

This can be written as , $x^2-6x+4=0$

We have to solve using quadratic formula,

For a given quadratic equation $ax^2+bx+c=0$ we can find roots using,

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$ ...........(1)

Where, $\sqrt{b^2-4ac}$ is the discriminant.

Here, a = 1 , b = -6 , c = 4

Substitute in (1) , we get,

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\Rightarrow x=\frac{-(-6)\pm\sqrt{(-6)^2-4\cdot 1 \cdot (4)}}{2 \cdot 1}$

$\Rightarrow x=\frac{6\pm\sqrt{20}}{2}$

$\Rightarrow x=\frac{6\pm 2\sqrt{5}}{2}$

$\Rightarrow x={3\pm \sqrt{5}}$

$\Rightarrow x_1={3+\sqrt{5}}$ and $\Rightarrow x_2={3-\sqrt{5}}$

We know $\sqrt{5}=2.23607$ (approx)

Substitute, we get,

$\Rightarrow x_1={3+2.23607}$ (approx) and $\Rightarrow x_2={3-2.23607}$ (approx)

$\Rightarrow x_1={5.23607}$ (approx) and $\Rightarrow x_2=0.76393}$ (approx)

Thus, the two root of the given quadratic equation $x^2+4=6x$ is 5.24 and 0.76 .

7 0

3 years ago

Read 2 more answers