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IRISSAK [1]
3 years ago
10

Marvin has decided to buy some toys to share with some children at the daycare center his sonattends. He buys 4 dolls for d doll

ars each, 12 race cars for r dollars each, and 8 coloring books for cdollars each. If Marvin had 40 dollars to spend, which expressions show how much money Marvin hasafter his purchase
Mathematics
1 answer:
muminat3 years ago
3 0

The expression that show the amount of money that Marvin has after his purchase is 400 - (4d + 12r + 8c)

Amount with Martin = $40

Since he buys 4<em> dolls</em> for d dollars each, 12 <em>race cars</em> for r dollars each, and 8 coloring books for c dollars each, the total value will be:

= (4 × d) + (12 × r) + (8 × c)

= 4d + 12r + 8c

Therefore, the expression that show the amount of money that Marvin has after his purchase will be:

= 400 - (4d + 12r + 8c)

Read related link on:

brainly.com/question/24429956

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Write two expressions to show w increased by 4.
iren2701 [21]

Answer:

4+w and w+4

Step-by-step explanation:

I used communative property where you simply flip flop the answers

5 0
3 years ago
Find the area please
tatuchka [14]

Answer:

D

Step-by-step explanation:

Recall that the area of a triangle is given by:

\displaystyle A = \frac{1}{2} bh

In this case, the base is <em>x</em> and the height is <em>y</em>. Hence:

\displaystyle A = \frac{1}{2} xy

We can write the following ratios:

\displaystyle \sin \alpha = \frac{x}{12} \text{ and } \cos \alpha = \frac{y}{12}

Solve for <em>x</em> and <em>y</em>:

\displaystyle x = 12\sin \alpha \text{ and } y = 12\cos \alpha

Substitute:

\displaystyle A = \frac{1}{2}\left(12\sin \alpha\right)\left(12\cos \alpha\right)

And simplify. Hence:

\displaystyle A = 72\sin \alpha \cos\alpha

In conclusion, our answer is D.

6 0
3 years ago
Jeff wants to spend at most $89 on his mom's birthday gifts. He already bought her a
Andrew [12]

The Inequality representing money she can still spend on her friend birthday gift is .

Jordan can still spend at most $30 on her friends birthday gift.

Step-by-step explanation:

Given:

Total money need to spend at most = $45

Money spent on Yoga ball = $15

We need to find how much money she can still spend on her friend birthday gift.

Solution:

Let the money she can still spend on her friend birthday gift be 'x'.

So we can say that;

Money spent on Yoga ball plus money she can still spend on her friend birthday gift should be less than or equal to Total money need to spend.

framing in equation form we get;

The Inequality representing money she can still spend on her friend birthday gift is .

On solving the the above Inequality we get;

we will subtract both side by 15 using subtraction property of Inequality.

Hence Jordan can still spend at most $30 on her friends birthday gift.

4 0
2 years ago
Question 6
kykrilka [37]

Answer:

m=Y2–Y1/X2–X1

m =    \frac{  - 9 - (6)}{1 - ( - 4)}  \\ m =  \frac{ - 15}{5}  =  - 3 \\ y = mx + b \\ y = - 3x + b

7 0
3 years ago
Read 2 more answers
Can someone please help me ASAP
charle [14.2K]

Answer:

(4,12)

(-1,-3)

Step-by-step explanation:

x^2 - y = 4

y = 3x

Use substitution.  Substitute 3x for y in the first equation

x^2 - (3x) = 4

x^2 -3x =4

Subtract 4 from each side

x^2 -3x -4 = 4-4

x^2 -3x-4 =0

Factor

(x-4) (x+1) =0

Using the zero product property

x-4 =0  x+1 =0

x=4   x=-1

Now to find y for each x solution

x=4

y =3x = 3(4) =12

(4,12)

x=-1

y =3x = 3(-1) =-3

(-1,-3)

4 0
3 years ago
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