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Andreas93 [3]
3 years ago
10

Please help solve 2d + 7 =9

Mathematics
2 answers:
bogdanovich [222]3 years ago
7 0

Answer:

d=1

Step-by-step explanation:

Move 7 to the other side by subtracting 7 on both sides:

2d+7-7=9-7

The equation now looks like this:

2d=2

Divide 2 on both sides:

2d/2=2/2

The equation now looks like this:

d=1 which is the answer

aleksandr82 [10.1K]3 years ago
5 0

Answer:

D=1 or just 1, i dont get  what the question is

Step-by-step explanation:

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Sergeeva-Olga [200]
To calculate this, we need to divide 7 minutes by 4 miles to see how long it takes her to hike 1 mile.
7/4 = 1.75 minutes/ mile
= 1 minute and 75 seconds = 2 minutes and 15 seconds.
Glad I could help and have a fantastic day!
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8 0
3 years ago
Convert the point-slope form to slope-intercept form y– 4 = -3(x + 2)
artcher [175]

Answer:

y = -3x - 2.

Step-by-step explanation:

y - 4 =  -3(x + 2)

y - 4 = -3x - 6

y = -3x - 6 + 4

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4 0
4 years ago
You estimate that a jar contains 68 marbles.The actual number of marbles is 60.Find the percent error.Round your answer to the n
Ray Of Light [21]
8/60=13.333% approximately 13%
4 0
4 years ago
A police car leaves a crime scene heading east directly towards the hospital at 72 kilometres per hour. An ambulance leaves a qu
blagie [28]

It will take 2 hours for the ambulance to pass the police car.

Given that a police car leaves a crime scene heading east directly towards the hospital at 72 kilometers per hour, and an ambulance leaves a quarter of an hour later and also heads directly east towards the hospital at 81 kilometers per hour, to determine how long will it take for the ambulance to pass the police car, the following calculation must be performed:

  • 72 x 0.25 = 18
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  • 18/9 = 2
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Therefore, it will take 2 hours for the ambulance to pass the police car.

Learn more about maths in brainly.com/question/25818763

5 0
3 years ago
ASAPPPPPPPP WITH EXPLANATION!!!!!!!!!!!!!
alexdok [17]
7-7-7-7/8 that’s the answer ty
7 0
3 years ago
Read 2 more answers
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