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Kazeer [188]
3 years ago
10

Three times a number increased by ten is equal to twenty

Mathematics
2 answers:
ivolga24 [154]3 years ago
8 0

the wording is a little confusing so it could be either of these answers.

3x + 10 = 20

    -10.     -10

3x = 10

x = 10/3

3(x +10) = 20

3x + 30 = 20

   -30.     -30

3x = -10

x = -10/3

JulijaS [17]3 years ago
6 0

Answer:

The number is 10/3

Step-by-step explanation:

<u>Step 1:  Convert words into an expression</u>

Three times a number increased by ten is equal to twenty

(3n) + 10 = 20

<u>Step 2:  Subtract 10 from both sides</u>

3n + 10 - 10 = 20 - 10

3n = 10

<u>Step 3:  Divide both sides by 3</u>

3n / 3 = 10 / 3

n = 10/3

Answer:  The number is 10/3

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The drawing shows a stack of paper cups. The cups are 20 cm high. Each cup after the first adds 0.8 cm to the height of the stac
Harrizon [31]

<u>Answer:</u>

The total number of whole cups that we can fit in the dispenser is 25

<u>Solution:</u>

It is given that the height of each cup is 20 cm.

But when we stack them one on top of the other, they only add a height of 0.8 to the stack.  

The stack of cups has to be put in a dispenser of height 30 cm.

So we need o find out how many cups can fit in the dispenser.

Since the first cup is 20 cm high, the height cannot be reduced. So the space to fit in the remaining cups in the stack is only 30-20 cm as that’s the remaining space in the dispenser

So,

30 - 20 = 10 cm

To stack the other cups we have 10 cm of height remaining

As we know that addition of each adds 0.8 cm to the stack, the total number of cups that can be fit in the dispenser can be calculated by the following equation. Let the number of cups other than the first cup be denoted by ‘x’.

10 + 0.8x = 30

0.8x = 20

x = 25

The total number of cups that we can fit in dispenser is 25

8 0
3 years ago
If a ball is thrown directly upward with a velocity of 50ft/s, it's height (in feet) after t seconds is given by y=50t-16t^2 wha
Tomtit [17]

Answer:

39.0625 ft

Step-by-step explanation:

Since the function is a quadratic representing height, and the coefficient of the t² is negative, the vertex of the parabola will be the maximum height achieved by the ball.  

The general form for a quadratic equation is ax² + bx + c, here a is -16, and b is 50

To find the x coordinate of the vertex, use   x = -b/(2a)

We have x = -50/[2(-16)]

               

                  x = -50/-32

             

                         x= 25/16

Now plug that into the equation to find the y value, which will be the height...

y = 50(25/16) - 16(25/16)²

    y = 1250/16 - 16(625/256)

        y = 1250/16 - 625/16

              y = 625/16

                   y = 39.0625

7 0
3 years ago
1. A pair of designer sneakers was purchased for $120. Since they were purchased, their price has increased by 15%. What is the
SCORPION-xisa [38]

Answer:

138$

Step-by-step explanation:

120$. Increased by 15%.

Since 15% equals to 0.15, you multiply 0.15 by the price.

0.15*120=18.

Then you ADD the 15%.

120+18=138

The new price is now 138$

4 0
3 years ago
Read 2 more answers
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faltersainse [42]

Answer: D. 20/3

Step-by-step explanation:

20/3 = 6.6 (repeating)

8 0
3 years ago
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there are 6  1/6 per hour

multiply 1/3 by 6

1/3 * 6 = 6/3 = 2 miles per hour

6 0
3 years ago
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