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Zina [86]
3 years ago
11

Dave has $15 to spend on an $8 book and two

Mathematics
2 answers:
o-na [289]3 years ago
6 0
Step 1_$15 take away $8=$7

Step 2_ $7 divided by 2 =$3.50

Answer is $3.50 for each card..
ipn [44]3 years ago
3 0
$2.50
that is the amount he can spen on the cards
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What is the original number?
notsponge [240]
The number is 20. 20+10 (half of 20) + 4 (a fifth of 20) = 34
8 0
3 years ago
A delivery truck Is transporting boxes of two sizes: large and small. The large boxes weigh 45 pounds each, and the small boxes
Mamont248 [21]

So there would be two equations

120=x+y

and

4850=45x+35y

We can now solve for each variable

y=120-x

plug it into the second equation...

4850=45x+35(120-x)

4850=45x+4200-35x

650=10x

x=65

Now plug in X

y=120-65

y=55

They are carrying 65 big boxes and 55 small boxes.

Check

---------

120=y+x

120=55+65

120=120

Brainliest/Heart would help!

5 0
3 years ago
The point-slope form of the equation of the line that passes through (–5, –1) and (10, –7) is . What is the standard form of the
kvasek [131]

Answer:

Point-Slope form:  y+1=-\frac{6}{15}(x+5)\\

standard form:  2x+5y=-15


Step-by-step explanation:

The standard form is given by: Ax+By=C

The point-slope form is given by: y-y_1=m(x-x_1)


  • <em>Let's call (-5,-1) as point (x_1,y_1), and</em>

<em>point (10,-7) as point (x_2,y_2)</em>

  • <em>We also know that the slope m is given by m=\frac{y_2-y_1}{x_2-x_1}</em>

Let's find the slope:

m=\frac{-7-(-1)}{10-(-5)}=-\frac{6}{15}


1. So, point slope form can be written as:

y-(-1)=-\frac{6}{15}(x-(-5))\\y+1=-\frac{6}{15}(x+5)\\


2. Rearranging this equation and bringing all x's and y's to one side and the number to another side will give us the standard form. So:

y+1=-\frac{6}{15}x-2\\y+\frac{6}{15}x=-2-1\\y+\frac{6}{15}x=-3

<em>But A, B, and C (standard form) needs to be integers, so to get rid of the denominator , we multiply the whole equation by 15. So we have:</em>

y+\frac{6}{15}x=-3\\15y+6x=-45

<em>We can factor out a 3, so it becomes:</em>

15y+6x=-45\\5y+2x=-15

So standard form is 2x+5y=-15

8 0
4 years ago
Help pleaseeee and show your work thanks :)​
Maslowich

Answer:

Step-by-step explanation:

5.

12x-7

12 x 4-7

48-7=41

answer-41

6.

(4 to the power of 2 =16)

16 divided by 8=2

answer-2

7.

5(1) + 3(7)-1(to the third power)

exponents first-1

multiplication

5x1=5 + 3x7=21

21+5=26

26-1

answer-25

8. 8(2nd power)divided by 2(4) +3(7)-1

8 to the 2nd power =16

2(4)=8

3(7)=21

16 divided by 8+21-1

8+21=29

29-1=28

answer 28

8 0
3 years ago
Help with math please?<br> I got C but Im not sure If im correct.
KonstantinChe [14]

Answer:

D. angle 7 and angle 5.

Step-by-step explanation:

It is actually option 'D.' This is because angle 7 and angle 5 are vertical angles; vertical angles are always congruent.

7 0
3 years ago
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