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Soloha48 [4]
2 years ago
9

Estimate 72.91 + 67.526 by first rounding each number to the nearest whole number

Mathematics
2 answers:
Vikentia [17]2 years ago
8 0

Answer:

141

Step-by-step explanation:

First, you would round 72.91 to 73 because the number to the right of 7 is greater than or equal to 5, so you would round up. Same goes for 67.526. round both up to 73 and 68 then add. You would get an answer of 141 :)

ycow [4]2 years ago
6 0

Answer: 141

Step-by-step explanation: By rounding up to the nearest whole number, that is taking 72.91 -> 73. The reason it is this way is that when a decimal is past 0.5, you round up. If a decmial is below 0.5, then you round down.

In this specific situation, we get the numbers 72.91 and 67.526.

As I explained, the numbers would round up because both numbers decimal values are above 0.5.

So after 72.91 is 73, and after 67.526 is 68.

68 + 73 =

141

hopefully I helped!

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F(x) = 3x^2-3x + 1<br> Find f (-2)
Oxana [17]

Answer:

19

Step-by-step explanation:

f(x) = 3x^2-3x + 1

Let x = -2

f(-2) = 3( -2)^2-3*-2 + 1

       = 3 * 4+6+1

       = 12 +6+1

       = 19

8 0
3 years ago
A student got 85% on a math test with 40 problems. How many did the student get correct?
dalvyx [7]

Answer:

The student got 34 of the 40 questions correct.

Step-by-step explanation:

85% of 40 is 34.

Hope this helps! :)

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5 0
3 years ago
Read 2 more answers
What is the value of y?<br> A.25 B.35 C.100 D.50
spin [16.1K]

Answer:

B. 35

That is the answer

Hope it helps

6 0
2 years ago
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PLS HELP ME ASAP FOR ALL 6!! (MUST SHOW WORK!!!) +LOTS LOTS OF POINTS!!!
Sedaia [141]
1. -4a-6=-12
add 6 to both sides
-4a-6+6=-12+6
-4a=-6
Divide by -4
a= \frac{6}{4} = 1 \frac{1}{2}

2. \frac{3}{5} z- \frac{1}{4} = \frac{17}{20}
add \frac{1}{4} to both sides but you will need to make a common denominator on the right
\frac{3}{5} z- \frac{1}{4} + \frac{1}{4} =  \frac{17}{20} +  \frac{5}{20}
\frac{3}{5}z=  \frac{11}{10}
Divide by \frac{3}{5} which means multiply by the <span>reciprocal</span>.
\frac{3}{5}* \frac{5}{3} z= \frac{11}{10} * \frac{5}{3}
z= \frac{55}{30} =1 \frac{5}{6}

3. 2 \frac{1}{2}(e-1 \frac{3}{4})=5 \frac{1}{2}
Distribute 
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2 \frac{1}{2} e=1 \frac{1}{8}
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4. 3w+7=20
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Divide
w= \frac{13}{3} = 4 \frac{1}{3}

5. -.2p+.4=-1.2
Subtract
-.2p=-1.6
Divide
p=8

6. \frac{y}{4} - \frac{3}{5} = \frac{18}{20}
Add, made sure you change to common denominator first
\frac{y}{4} = 1 \frac{1}{4}
Multiply by 4
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5 0
3 years ago
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