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nekit [7.7K]
3 years ago
10

Selen had 4 times....

Mathematics
1 answer:
stellarik [79]3 years ago
3 0
I think this is the answer
A)Cathy had $6 at first
B)Selena has $24 at first
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You travel 275.5 miles in 8.5 hours whats the speed
hichkok12 [17]
We just need to change every value to the units in the question

We have to find meters per second. In 8.5 hours, there are (8.5*60*60 = 30,600) seconds.

1 mile = 1600 meters

275.5 * 1600 = 440800.

440800/30600 = 14.40522876 meters per second
7 0
3 years ago
Which point corresponds to the real zero of the graph of y = log3 (x+2) - 1?
brilliants [131]

Answer:

(1, 0 )

Step-by-step explanation:

using the rule of logarithms

log_{b} x = n ⇒ x = b^{n} , then

y = log_{3} (x + 2) - 1

to find the zero let y = 0 , that is

log_{3} (x + 2) - 1 = 0 ( add 1 to both sides )

log_{3} (x + 2) = 1 , then

x + 2 = 3^{1} = 3 ( subtract 2 from both sides )

x = 1

the zero is (1, 0 )

8 0
2 years ago
Simplify the product using the distributive property.
Svetllana [295]

Answer:

<h2><em><u>16h2</u></em><em><u> </u></em><em><u>-</u></em><em><u> </u></em><em><u>4h</u></em><em><u> </u></em><em><u>-</u></em><em><u> </u></em><em><u>42</u></em></h2>

Step-by-step explanation:

(4h + 6)(4h − 7)

= 4h(4h - 7) + 6(4h-7)

= 16h2 - 28h + 24h - 42

= <em><u>16h2 - 4h - 42 (Ans)</u></em>

7 0
3 years ago
Solve 3x − 2y = −21 and 2x + 5y = 5 using elimination
nydimaria [60]

Answer:

x = -5 and y = 3

Step-by-step explanation:

There are two equations :

3x − 2y = −21 ....(1)

2x + 5y = 5 ......(2)

Multiply equation (1) by 2 and equation (2) by 3.

6x - 4y = -42 ...(3)

6x + 15y = 15 ....(4)

Subtract equation (4) from (3) :

6x - 4y - (6x + 15y) = -42 -15

-4y -15y = -57

-19y = -57

y = 3

Put y = 3 in equation (2) :

2x + 5(3) = 5

2x = 5-15

2x = -10

x = -5

So, the value of x is (-5) and y = 3.

6 0
3 years ago
After John worked at a job for 10 years, his salary doubled. If he started at $x, hls salary after 10 years is​
Sholpan [36]

Answer:

$2x

Step-by-step explanation:

  1. x × 2 = 2x

I hope this helps!

4 0
3 years ago
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