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Leni [432]
3 years ago
8

Select the proper placement for parentheses to speed up the addition for the expression 4 + 6 + 5 A. (4 + 6) + 5 B. (5 + 6) + 4

C. 4 + (6 + 5) D. (5 + 4) + 6
Mathematics
2 answers:
nadezda [96]3 years ago
8 0
I think it's A. Because 6+4 is 10 +5 it would be 15
viva [34]3 years ago
7 0
I believe it should be A, because it's easier to add 10 to anything rather than 11 or 9.  
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The figure below was formed by joining two semicircles to opposite ends of a square with sides that measure 4 centimeters each.
shusha [124]

Answer:

So the answer is 16+[(3.14)* 2)^2)

Step-by-step explanation:

4*4= 16

pie(r)^2

3.14*2^2

4 0
3 years ago
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At a concession​ stand,three hot dog(s) and two hamburger(s) cost ​$8.25​;two hot dog(s) and three hamburger(s) cost ​$8.00. Fin
poizon [28]

Answer:

The cost of one hot dog and the cost of one hamburger is $3.25

The cost of one hot dog is $1.75

Step-by-step explanation:

Let the number of hot dogs be represented by d and hamburgers be h

3d + 2h = 8.25 ----- eqn(I)

2d + 3h = 8.00 ----- eqn(II)

From eqn(I): d = (8.25 - 2h)/3

substitute the expression for d into eqn(II)

2d + 3h = 8

2(8.25 - 2h)/3 + 3h = 8

(16.50 - 4h) + 3h(3) = 8(3)

16.50 - 4h + 9h = 24

5h = 24 - 16.50

5h = 7.50

h = 7.50/5 = 1.50

One hamburger costs $1.50

d = (8.25 - 2h)/3 = (8.25 - 2×1.50)/3 = (8.25 - 3.00)/3 = 5.25/3 = 1.75

One hot dog costs $1.75

Cost of one hot dog and cost of one hamburger = $1.75 + $1.50 = $3.25

3 0
3 years ago
What is the next word in the pattern below?
RUDIKE [14]
Winter
Winter comes after fall in the pattern as we see already. Because this is true, winter is next.
8 0
2 years ago
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Find the slope of the line through the points (-2, 1) and (0,4).​
jeka94

Answer:

-3/2 is the answer

y2-y1

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5 0
3 years ago
Please help out explanation need it
inna [77]

Step-by-step explanation:

Area is 12*5=60

Height is 4

Perimeter is 2*17=34

Surface area=120+136=256

5 0
3 years ago
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