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3 years ago

I need help. i don't understand this at all.

Mathematics

2 answers:

faust18 [17]3 years ago

5 0

Yes that’s the answer

Sauron [17]3 years ago

4 0

Answer:

Step-by-step explanation:

If this is in terms of angles, 4x+6 must be equal to 90 since it is half of the angle produced by a line (180°) So solving for 4x+6=90, x=21

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Work in the five days?

Ghella [55]

Answer:

9.3

Step-by-step explanation:

last week she worked 45.6 hours. since 40 hours is the limit for normal working hours, she worked 45.6-40 = 5.6 hours overtime.

this week she worked 9.7+8.3+8+9.1+8.6 hours = 43.7 hours.

she worked therefore 43.7-40 = 3.7 hours overtime.

so, in total of the two weeks, she worked 5.6+3.7 = 9.3 hours overtime.

7 0

3 years ago

Solve the following equation for h.<br> r+3Q/h=t

Arada [10]

Answer:

$\bold{h=\dfrac{3Q}{t-r}}$

Step-by-step explanation:

$\bold{r+\frac{3Q}h=t}\\-r\qquad\ -r\\\bold{\frac{3Q}h=t-r}\\\cdot h\qquad \cdot h\\ \bold{3Q=(t-r)h}\\^{\div(t-r)\quad\div(t-r)}\\\bold{\dfrac{3Q}{t-r}=h}$

Or, if you mean (r+3Q)/h=t:

$\bold{\frac{r+3Q}h=t}\\{}\ \ \cdot h\quad\ \cdot h\\\bold{r+3Q=ht}\\{}\ \ \div t\qquad \div t\\\bold{\dfrac{r+3Q}{t}=h}\\\\\bold{h=\dfrac{r+3Q}{t}}$

4 0

3 years ago

The current temperature is 8 degrees fahrenheit. By how many degrees does the temperature need to change to reach 7 degrees fahr

trapecia [35]

Answer:

-8-7= 15

so the answer is 15

Step-by-step explanation:

6 0

3 years ago

Ryan said that 212.314 73.243 285.557. Is Ryan's answer reasonable?

lord [1]

A.... maybe not sure

7 0

3 years ago

7 ten thousands equals how many thousands

algol [13]

7 10 thousands is equal to 70 thousand

6 0

3 years ago

Read 2 more answers