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Masja [62]
3 years ago
6

Twice the sum of k and 9 is 4

Mathematics
2 answers:
Mademuasel [1]3 years ago
4 0

Answer:

2(k + 9) = 4

Step-by-step explanation:

Use distributive property.

2 x k = 2k

2 x 9 = 18

Equation:

2k + 18 = 4

Subtract 18 from both sides

2k = -14

Divide both sides by 2

k = -7

koban [17]3 years ago
4 0

Answer:

-7

Step-by-step explanation:

First, we need to write this an equation

2(k+9)=4

2k+18=4

-18       -18

2k=-14

/2      /2

k=-7

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4.) Which best describes the relationship between < AFB and < AFD?
MAVERICK [17]

Answer:

C. Supplementary angles

Step-by-step explanation:

Given

<AFB = 72

Required

Relationship of <AFB and <AFD

<AFB and <AFD are on a straight line and angle on a straight line is 180

From the presentation of both angles,

<AFB + <AFD = 180

Substitute 72 for <AFB

72 + <AFD = 180

Make <AFB the subject of formula

<AFD = 180 - 72

<AFD = 108

Since both <AFB and <AFD sums to 180, then they are supplementary angles.

Hence, the relationship between both angles is supplementary angles

5 0
4 years ago
Any of these??? the whole page? Please it's due in 2 hours and I would love the help!
Vinvika [58]
9.This is because it goes through the whole circle passing through the centre point. at the full width
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6 0
3 years ago
Two ropes are attached to a large ballon in a parade. The people holding the ropes are 40 feet apart,and the angle between the t
tankabanditka [31]

Answer:

We'll use the Law of Sines:

Sine (C) / c = Sine (B) / b

Sine (86) / 40 = Sine (52) / b

0.99756 / 40 = 0.78801 / b

0.024939  = .78801 / b

b = .78801 / .024939

side b = 31.5974978949  feet

Sine (42) / a = Sine (86) / 40

(0.66913 / a) = 0.024939

a = .66913 / .024939

side a = 26.8306668271  feet

******************************************************

I forgot to include the graphic.  

Step-by-step explanation:

8 0
3 years ago
Please help me I need the answer and work !!!!
nika2105 [10]
X=1, Y=-2. Heres your answer. It should be C
8 0
3 years ago
Read 2 more answers
Can someone help me with this problem?
Anika [276]
16 : 80
x : 100

Cross multiply.

80× = 100×16
× = 100 × 16 /80
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His allowance is 20g of saturated fat.
4 0
3 years ago
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