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3 years ago

-2(7a+ 9b) = –14a + [?]b

Mathematics

2 answers:

MariettaO [177]3 years ago

4 0

Answer:

the unknown, [?], has the value -18.

Step-by-step explanation:

Perform the indicated multiplication on the left side:

-14a - 18b = -14a + [?]b

Adding 14a to both sides, we eliminate a:

-18b = [?]b

Thus, the unknown, [?], has the value -18.

OverLord2011 [107]3 years ago

3 0

Answer:

-18

Step-by-step explanation:

Left Hand Side = -2(7a + 9b) = -14a - 18b

Comparing it with Right Hand Side, ? = -18

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Mademuasel [1]

Answer:

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3 years ago

The area of the floor is 6,175 square feet. The length of the floor is 95 feet. The width is w feet.

Anestetic [448]

Answer:

the width is 65

Step-by-step explanation:

width x length = area

w x 95 = 6,175

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3 years ago

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Mike and Beatrice purchase a house for $200,000. If the equation V = 200,000(1.03)x represents the value of the house after x ye

notsponge [240]

X=((log(225000/200000)/log(1.03))
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4 years ago

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What is the perimeter of the composite figure? Round to the nearest tenth

Ugo [173]

Answer:

123.8 units

Step-by-step explanation:

The vertices of the polygon has been labelled ABCDEF, as shown in the diagram attached below.

Perimeter of the Polygon = $\overline{AB} + \overline{BC} + \overline{CD} + \overline{DE} + \overline{EF} + \overline{FA}$

$\overline{AB}$ = |-12 - 24| = |-36| = 36 units

$\overline{BC}$ : calculate the distance between B(24, 16) and C(15, 3) using the distance formula.

$\overline{BC} = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

$\overline{BC} = \sqrt{(24 - 15)^2 + (16 - 3)^2}$

$\overline{BC} = \sqrt{(9)^2 + (13)^2}$

$\overline{BC} = \sqrt{81 + 169} = \sqrt{250}$

$\overline{BC} = 15.8 units$

$\overline{CD}$ = |6 - 15| = |-9| = 9 units

$\overline{DE}$ = |3 -(-12)| = |-15| = 15 units

$\overline{EF}$ = |-12 - 6| = |-18| = 18 units

$\overline{FA}$ = |18 -(-12)| = 30 units

Perimeter = 36 + 15.8 + 9 + 15 + 18 + 30 = 123.8 units

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3 years ago

Which group(s) reported having the widest range of time to relax? Please estimate what that range is.

tatuchka [14]

Answer:

Divorced ; Never married

Step-by-step explanation:

The range of a dataset can be obtained from a boxplot by taking the difference of the readings of the minimum and maximum values. These values are culled from the boxplot by taking the reading on the endpoint of the lower whisker and endpoint of the upper whisker respectively. In the figure Given, we Can deduce that the divorced group and never married group have the widest range of time to relax

Maximum = 8

Minimum = 0

Estimated range: Maximum - Minimum = (8 - 0) = 8

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3 years ago