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bogdanovich [222]
3 years ago
7

Help with 7 and 8 please ASAP !!! Thanks

Mathematics
2 answers:
lukranit [14]3 years ago
8 0

7) 52h because that's how you'd find the distance traveled if there was a number instead of a variable.(d=st)

8)525+3w because you have to add his original total to the amount of cds he will get and if he gets 3 every week that's 3w and then you add them to get the new total.

IrinaVladis [17]3 years ago
7 0

7. 52(h) = Total distance traveled

8. 525 + 3(w) = Total songs

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Help me Please!! Ive got a deadline!! Thanks! (:
saul85 [17]
The equation in standard form is 2x^2 + 7x - 15=0. Factoring it gives you (2x-3)(x+5)= 0. That's the first one.  The second one requires you to now your formula for the axis of symmetry which is x = -b/2a with a and b coming from your quadratic.  Your a is -1 and your b is -2, so your axis of symmetry is
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3 0
3 years ago
N is a rational number.m is an irrational number.n2 cannot be an irrational number? why or why not
Korolek [52]

If n is rational, it means that

n\in\mathbb{Q}\Rightarrow n=\frac{p}{q},\quad p\in\mathbb{Z},\quad q\in\mathbb{Z}^*

Therefore when we do n² we can write it as

n^2=\frac{p^2}{q^2},\quad p\in\mathbb{Z},\quad q\in\mathbb{Z}^*

Remember that the product of two integer numbers is also an integer, therefore we can guarantee that

p^2\in\mathbb{Z}\text{ and }q^2\in\mathbb{Z}^*

Then we can confirm that n² is the quotient of two integers and the denominator is not zero, therefore, n² is always rational, it cannot be an irrational number

8 0
11 months ago
The scale of a map says that 3cm represents 8km. What distance on the map (in centimeters) represents an actual distance of 2 ki
makvit [3.9K]
X/2=3/8x
x=(2)3/8
x=6/8
x=3/4
x=0.75cm
5 0
2 years ago
Anwers : <br> a. dotted<br> b. y=-x+4<br> c. y=x-4<br> d. y=x+1<br> e. solid<br> f. yes<br> g. no
Ksenya-84 [330]

Answer:

Those answers are correct

5 0
2 years ago
Rachel received a $80 gift card for a coffee store. She used it in buying some coffee that cost $7.61 per pound. After buying th
Olin [163]

Answer:

6

Step-by-step explanation:

80- 34.34 = 45.66

45.66 ÷ 7.61 = 6

5 0
2 years ago
Read 2 more answers
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