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faust18 [17]
3 years ago
7

Simplify the expression.

Mathematics
2 answers:
kramer3 years ago
8 0
-\frac{7}{9}  - \frac{5}{10}
= -\frac{70}{90} - \frac{45}{90}
= -\frac{115}{90}
= -\frac{23}{18} (Answer D)
Ne4ueva [31]3 years ago
5 0
Selection D is appropriate.

-14/18 -9/18 = -23/18

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Rachel can make 3 bracelets in an hour. Oliver can make only 2 bracelets in an hour, but he already has completed 5 bracelets. E
Sidana [21]
For the answer to the question above, Since Rachel makes 3 bracelets an hour, her linear equation should be y=3h. 3 represents the rate of change and h represents the number of hours as a variable. 
Oliver's linear equation is y=2h+5 because 2 is the rate of change and 5 is the b value or the y-intercept in a linear equation y=mx+b. To find when both have the same number of bracelets, we find the point of intersection...
2h+5=3h
5=3h-2h
5=h
Therefore in 5 hours, both will have the same amount of bracelets. 
7 0
3 years ago
Solve the Equation below : t -1/3 = 1/8 Solve for t. ​
Mrac [35]

t-1/3= 1/8

t-1/3+1/3= 1/8+1/3

t= 1/8+1/3

Find common denominator for the fractions.

common denominator is 24

Multiply by 3 for 1/8

Multiply by 8 for 1/3

t= 3/24+8/24

t= 11/24

Answer is t= 11/24

7 0
3 years ago
What is a square root
AleksandrR [38]
The square foot (plural square feet; abbreviated sq. ft, sf, or ft2; also denoted by '2) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States and partially in Bangladesh, Canada, Ghana, Hong Kong, India, Malaysia, Nepal, Pakistan, Singapore and the United Kingdom.[citation needed] It is defined as the area of a square with sides of 1 foot.

Although the pluralisation is regular in the noun form, when used as an adjective, the singular is preferred. So, a flat measuring 700 square feet could be described as a 700 square-foot flat. This corresponds to common linguistic usage of foot.
6 0
4 years ago
The surface are of a cylinder is given by the formula SA=2pir^2+2pirh,where r is the radius of the base of the cylinder and h is
UNO [17]

Answer:

h=\frac{SA}{2\pi r}-r

Step-by-step explanation:

The surface area of a cylinder is equal to

SA=2\pi r^{2} +2\pi rh

Solve for h

That means ----> isolate the variable h

subtract  2πr² both sides

(SA-2\pi r^{2})=2\pi rh

Divide by 2πr both sides

\frac{SA-2\pi r^{2}}{2\pi r}=h

Rewrite

h=\frac{SA-2\pi r^{2}}{2\pi r}

Simplify

h=\frac{SA}{2\pi r}-r

3 0
3 years ago
What is 258/300 ?please help me
wel
Its just simple division. Decimal form:0.86 (hope this helps)
6 0
3 years ago
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