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loris [4]
2 years ago
12

What is 1 times 3 plus 4 divided by 2?? please help me

Mathematics
2 answers:
Nataly [62]2 years ago
6 0

Answer:

3.5

Step-by-step explanation:

the answer is 3.5, not 5 don't let the "calculator" trick you

Montano1993 [528]2 years ago
3 0

the anwenser is 3.5 hope this helped :}

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Find the volume of the figure. Round to the nearest tenth if necessary.<br> 3 yd<br> 3 yd<br> 10 yd
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Answer: 90 yards

Step-by-step explanation:

10 by 3 by 3 is 90

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Lola needs to sign 96 invitations. Using a stopwatch that measures time to tenths of a second, it takes Lola 5.3 seconds to sign
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Lola needs 508.8 seconds to do every invitations. You only have to multiply the 2 numbers

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3 years ago
Evaluate square root of 24 - x when x = 6 . Write the answer in simplified radical form.?
timofeeve [1]
So, first we input 6
24 - 6 = 18
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√(9 * 2)
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4 0
3 years ago
the ratio of sallys height is 7:8. if the sum of their heights is 90 inches. how tall are sally and jack?
pickupchik [31]

Answer:

Sally is 42 in. tall, and Jack is 48 in. tall.

Step-by-step explanation:

There are some words missing in the problem.

Perhaps the problem was meant to read:

"The ratio of Sally's height to Jack's height is 7:8. If the sum of their heights is 90 inches, how tall are Sally and Jack?"

Solution:

The ratio of the heights is 7:8.

Sally could measure 7 inches and Jack 8 inches, but then when you add the heights, 7 in. + 8 in. = 15 in. which is not 90 inches.

If you multiply both numbers in a ratio by the same number, the new numbers are still in the same ratio.

Multiply 7 and 8 by 2. You get 14 and 16. Maybe Sally is 14 in. tall and Jack is 16 in. tall. Add the heights, 14 in. + 16 in. = 30 in. This is also not 90 in.

We can keep on guessing what number to multiply by 7 and 8 by so their sum is 90, but we can use algebra to write an equation and not have to go through many guesses.

There is a number, x, that when you multiply 7 and 8 by x, the sum of the products is 90. We don't know what x is, but we can write an equation and solve for x.

The numbers in the ratio are 7x and 8x.

7x and 8x are still in the ratio 7:8.

Now we add the numbers 7x and 8x and set the sum equal to 90. Then we solve for x.

7x + 8x = 90

15x = 90

x = 6

We get x = 6. Now we know we need to multiply both 7 and 8 by 6 to get the heights we need.

7 in. * 6 = 42 in.

8 in. * 6 = 48 in.

Check: 42 in. + 48 in. = 90 in.

Answer: Sally is 42 in. tall, and Jack is 48 in. tall.

7 0
2 years ago
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