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NemiM [27]
3 years ago
7

Marco needs $57 to buy new basketball shoes. If Marco earns $3 per day working and already has $12 saved, which equation shows h

ow many days Marco must work before he can afford the shoes?
A. 3d = 57

B. 3d - 12d = 57

C. 3d = 45

D. 3d - 12 = 57

Whoever get's it correct will get brainliest
Mathematics
1 answer:
Annette [7]3 years ago
8 0
It’s D

Let me know if you need an explanation!
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Landon played football last week he played 22 minutes on Monday 19 minutes on Tuesday and 33 minutes on Wednesday on Thursday he
ladessa [460]

Answer:

32

Step-by-step explanation:

M: 22

T:19

W:33

Th: 2m, if m=22, Th=44

22+19+33+44=118

150-118=32

So he played for 32 minutes on Friday

4 0
3 years ago
What is the slope of the graph of x - 2y = 8?<br> A. 0<br> B. 1/2 <br> C. 2<br> D. -1/2
BaLLatris [955]

Answer:

1/2

Step-by-step explanation:

-2y= 8-X

y= -4+X/2

y= X/2-4

recall that: y= mx+c

in the equation y= x/2+C

m=1/2

where m is your slope

7 0
2 years ago
The Discriminant of a quadratic equation is -6. What types of solutions does the equation have?
erastovalidia [21]

Answer:

2 complex conjugates

Step-by-step explanation:

The discriminate is the part of the quadratic formula that is under the radical sign.  If the discriminate is negative, that means that the solutions, both of them, are complex conjugates, aka imaginary solutions.

5 0
3 years ago
Read 2 more answers
Please help and show work ​
nika2105 [10]

Answer:

x= 82y=78 tan =10

Step-by-step explanation:

7 0
3 years ago
Jimmy set his score for his math test. After the math teacher returnee his paper to him, he realized that if he increased his ta
mixer [17]
When ever you have percentages, it should be helpful to bear in mind you can express them as multipliers. In this case, it will be helpful.
So, if we let:
a = test score
b = target score
then, using the information given:
a = 1.1b + 1
a = 1.15b - 3
and we get simultaneous equations.
'1.1' and '1.15' are the multipliers that I got using the percentages. Multiplying a value by 1.1 is the equivalent of increasing the value by 10%. If you multiplied it by 0.1 (which is the same as dividing by 10), you would get just 10% of the value.
Back to the simultaneous equations, we can just solve them now:
There are a number of ways to do this but I will use my preferred method:
Rearrange to express in terms of b:
a = 1.1b + 1
then b = (a - 1)/1.1
a = 1.15b - 3
then b = (a + 3)/1.15
Since they are both equal to b, they are of the same value so we can set them equal to each other and solve for a:
(a - 1)/1.1 = (a + 3)/1.15
1.15 * (a - 1) = 1.1 * (a + 3)
1.15a - 1.15 = 1.1a + 3.3
0.05a = 4.45
a = 89

8 0
3 years ago
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