All categories

3 years ago

Write each sentence as an equation.

Mathematics

2 answers:

riadik2000 [5.3K]3 years ago

7 0

1) x + 16 = 58

2) 8x = 80

3) 12/x = 3

4) x - 8 = 21

kupik [55]3 years ago

3 0

Answer:

(The ones underlined are the equation)

1) Let the number be x

x + 16 = 58

x = 58 - 16

x = 42

2) let the number be x

x * 8 = 80

x = 80/8

x = 10

3) let the number be x

12/x = 3

x = 12/3

x = 4

4) let the number be x

x - 8 = 21

x = 21 + 8

x = 9

You might be interested in

Eight figures are below. Which ones are convex polygons?

Nataly_w [17]

Answer:

A, C, D, F, G. I believe so?

7 0

3 years ago

Find the exact value of sin (x-y) if sinx=4/9 and siny=1/4

Svetach [21]

Answer:

sin(x - y) = 0.21

Step-by-step explanation:

we have the sin values which we need to get cos values

sin (A-B) = sin A cos B - sin B cos A

sin² A + cos² A = 1

sin x = 4/9

cos² x = 1 - sin² x = 1 - 16/81 = 65/81

cos² x = 65/81

cos x = √65/9

sin y = 1/4

cos² y = 1 - sin² y = 1 - 1/16 = 15/16

cos² y = 15/16

cos y = √15/4

sin(x − y) = sin x cos y - sin y cos x

sin(x - y) = 4/9 √15/4 - 1/4 √65/9

sin(x - y) = (4√15-√65)/36

sin(x - y) = 0.21

socratic Narad T

8 0

2 years ago

Please help this is due tomorrow

tia_tia [17]

Danielle had a percent error of 13.6 (farthest)
Iris had a percent error of 6.8
HB has a percent error of -2.3 (closest)

So the order is HB, Iris, and then Danielle

7 0

3 years ago

An array showing the factor pair of three and 6 would have 3 rows of 6 objects. True? Or False?

JulsSmile [24]

Answer:

false

Step-by-step explanation:

3 0

3 years ago

Anyone know the answers to 1, 2, 3, 4, 5

muminat

Answer:

1. C. 1/4(4) + 1/4(9) (A, 1/4(13), is essentially C simplified (without figuring it out).)

2. G - -4

3. A - -4(-5) + (-4)x

4. J - 1/6x + 1/6y

5. A - 60(10 + 2)

Step-by-step explanation:

1/4(4 + 9) We can distribute 1/4 into 4 and 9.

1/4(4) + 1/4(9) Now while we have our answer, this can be further simplified.

1/4(13) What's on the left is the simplified 2-term equation.

So really, either C or A will be the answer. But due to the format of #3, I put C as my answer. B & D were out because there wasn't any extra multiplication.

-2/5(15 - 5) Subtract 5 from 15 to get 10.

-2/5(10) Multiply -2/5 by 10 to get -20/5

-20/5 Divide -20 by 5 to get -4.

-4, so G is the answer. This was negative, so H & J were out to begin with. F was out as soon as I solved the problem.

-4(-5 + x) Distribute -4 into -5 + x.

-4(-5) + (-4)x, so A is the answer. Don't get tricked! B may look right, but there should be a negative sign in front of the 5, hence why it's incorrect.

1/6(x + y) Distribute 1/6 into x + y.

1/6x + 1/6y, so J is the answer. F & G are already out because you don't multiply the variables by each other. H is also out because there wasn't any multiplication involved other than x + y being multiplied by 1/6.

Only 60(10 + 2) would have worked, so A is the answer. The tickets would have cost 720 dollars (600 + 120). B would have equated to 624 (24 + 600), C would have been 132 (6 * 22), and D would have been 600. (10 * 60).

6 0

3 years ago