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Helen [10]
3 years ago
11

Solve the system of equations.

Mathematics
2 answers:
ycow [4]3 years ago
7 0
The answer is letter c.
Dafna1 [17]3 years ago
4 0
C is the answer for this
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Bob and Caitlyn are playing a trading-card game. Between them, they have 81 cards. Bob has 7 fewer cards than Caitlyn.
Alina [70]
We know that Bob and Caitlyn are playing a trading-card game. Between them, they have 81 cards. <span>Bob has 7 fewer cards than Caitlyn. Since Bob has 7 cards fewer them Caitlyn we have to divide by 2 and subtract 7. 

81 / 2 = 40 [rounded] 

40 - 7 = cards Bob has 

= 33 cards bob has 


</span>
3 0
3 years ago
Read 2 more answers
Identify the unit rate in the graph. A ) 80 Sting B) 60 09 40 D) 20​
AveGali [126]

Answer:

C - 40

Step-by-step explanation:

The unit rate in a graph is how much a unit increases with time. The unit here is Distance (mi) and the time here is Time (h). So to find the unit rate, you divide the y-value with its corresponding x-value (given it is a straight line, which it is in this case).

So for example, let's take the unit 80mi, its corresponding x-value is 2, so 80/2 = 40. Let's do the same for 160mi, its corresponding x-value is 4, so 160/4 = 40 and so on. The value will be the same for all x-y values in the graph.

3 0
3 years ago
Read 2 more answers
What is the volume of the prism?
GREYUIT [131]

let's firstly conver the mixed fractions to improper fractions and then get their product.

\stackrel{mixed}{4\frac{1}{2}}\implies \cfrac{4\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{9}{2}} ~\hfill \stackrel{mixed}{2\frac{1}{2}}\implies \cfrac{2\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{5}{2}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{9}{2}\cdot \cfrac{5}{2}\cdot 6\implies \cfrac{270}{2}\implies 135

hmmm I take it that one can write that mixed as 135\frac{0}{2}.

is valid, not that it makes any sense.

5 0
2 years ago
Vallues of 3×-2ײ=7​
mrs_skeptik [129]

Answer:

Step-by-step explanation:

"Find the values of x that satisfy 3x - 2x^2 = 7."  Please do not use " × " to represent a variable; " × " is an operator, the "multiply" operator.

Rearrange these three terms in descending order by powers of x:

-2x^2 + 3x - 7 = 0.   Here the coefficients are a = -2, b = 3 and c = -7, and so the discriminant of this quadratic is b^2-4ac, or 9 - 4(-2)(-7), or 9 - 56, or -47.

Because the discriminant is negative, we'll have two different complex roots here.  The quadratic formula becomes

       -3 ± i√47         -3 ± i√47

x = ----------------- = -------------------

        2(-2)                     -4

6 0
3 years ago
Calculate the slope of the line that contains the points (5,-2) and (-3,-7).
photoshop1234 [79]

Answer:

slope = 5/8

Step-by-step explanation:

y2 - y1 / x2 - x1

-7 - (-2) / -3 - 5

-5 / -8

= 5/8

4 0
2 years ago
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