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2 years ago

an electronic store had a 20% off sale. If a stareo originally cost $125, how much did the stareo cost during the sale?

Mathematics

1 answer:

spayn [35]2 years ago

6 0

Answer:

100

Step-by-step explanation:

You multiply 125 by 0.80. This is because 125 is the original amount nd to find out how much you have to pay, you would subtract 20% from 100% to get 80%. Now, you know that you have to pay for 80% of the stereo. In order to multiply the two numbers together, you have to convert 80% to a decimal which is 0.80. Lastly, you multiply to get 1oo. Therefore, the stereo costs $100.00 during the sale.

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zloy xaker [14]

Answer:

$A_T=150cm^2$

Explanation: We need to find the area of the triangle, We know that the area of any right triangle is:

$A_T=\frac{1}{2}(b\times h)$

Therefore in the information given we have the following:

$\begin{gathered} h=20\operatorname{cm} \\ b=15\operatorname{cm} \end{gathered}$

Therefore the Area of this triangle is as follows:

$\begin{gathered} A_T=\frac{1}{2}(b\times h) \\ \therefore\rightarrow \\ A_T=\frac{1}{2}(20cm\times15cm)=\frac{1}{2}(20\times15)cm^2 \\ A_T=\frac{1}{2}(300)cm^2=150cm^2 \\ \therefore\rightarrow \\ A_T=150cm^2 \end{gathered}$

Note! Units are centimeter-squared

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9 months ago

2/3b+5=20−b Solve for b. Both sides have to be equal.

BigorU [14]

Answer:

B=9

Step-by-step explanation:

Solve for b by simplifying both sides of the equation, then isolating the variable.

Hope this helps

3 0

2 years ago

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Resuelve las ecuaciones 3(2x-1)+5(x-3)=4x+7 5-x-(2x+3)= 3+8x

Ivan

Let's solve your equation step-by-step.3(2x−1)+5(x−3)=4x+7Step 1: Simplify both sides of the equation.3(2x−1)+5(x−3)=4x+7Simplify:11x−18=4x+7Step 2: Subtract 4x from both sides.11x−18−4x=4x+7−4x7x−18=7Step 3: Add 18 to both sides.7x−18+18=7+187x=25Step 4: Divide both sides by 7.7x7=257x=257Answer:x=257


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2 years ago

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