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2 years ago

Help me with three questions a brainlist!

Mathematics

1 answer:

Naya [18.7K]2 years ago

6 0

Answer:

Step-by-step explanation:

First question

1 solution

6p-12= - 5p Take 6p from both sides
-12 = -5p - 6p Combine
-12 = - 11p Divide by - 11
-12/-11 = p
1.09 = p

Second Question

Infinitely many solutions.
5p + 10 = 5p + 10
No matter what value you use for p, the right side of the equation always equals the left side.

Third question

y = 25 - 2x
x = 6
y = 25 - 2*6
y = 25 - 12
y = 13

There are 13 more stops to make.

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HELP ME!!! Answer in Scientific Notation and explain and show work.

umka21 [38]

Multiplying means you add the exponents and dividing means you subtract the exponents. Treat the decimals as you normally would.
$(4.3 \times {10}^{8} ) \times (2.0 \times {10}^{6} )$
$4.3 \times 2.0 = 8.6$
$8 + 6 = 14$
$8.6 \times {10}^{14}$

$(6 \times {10}^{3} ) \times (1.5 \times {10}^{ - 2} )$
$6 \times 1.5 = 9$
$3 + - 2 = 1$
$9 \times {10}^{1}$

$(1.5 \times {10}^{ - 2} ) \times (8.0 \times {10}^{ - 1} )$
$1.5 \times 8 = 12$
$- 2 + - 1 = - 3$
$12 \times {10}^{ - 3}$

$\frac{(7.8 \times {10}^{3}) }{(1.2 \times {10}^{4}) }$
$\frac{7.8}{1.2} = 6.5$
$3 - 4 = - 1$
$6.5 \times {10}^{ - 1}$

$\frac{(8.1 \times {10}^{ - 2} )}{(9.0 \times {10}^{2} )}$
$\frac{8.1}{9.0} = 0.9$
$- 2 - 2 = - 4$
$0.9 \times {10}^{ - 4}$

$\frac{6.48 \times {10}^{5} }{(2.4 \times {10}^{4} )(1.8 \times {10}^{ - 2}) }$
$2.4 \times 1.8 = 4.32$
$4 + - 2 = 2$
$\frac{6.48 \times {10}^{5} }{4.32 \times {10}^{2} }$
$\frac{6.48}{4.32} = 1.5$
$5 - 2 = 3$
$1.5 \times {10}^{3}$

7 0

3 years ago

Canasta is a card game where negative numbers represent losing points and positive numbers represent gaining points.

AlekseyPX

Answer:

gaining points would be +12

5 0

3 years ago

I really need help I don’t understand this that well

marin [14]

Answer:

They give you the answer just keep going until you get the same answer or use the inverse of what they did

Step-by-step explanation:

6 0

3 years ago

How many items are in the sample space for rolling a die and flipping a coin?

Blizzard [7]

Answer:

I think the answer would be 8 but I am not sure.

5 0

4 years ago

A man has $ 10,000 to invest. He invests $ 4000 at 5 % and $ 3500 at 4 %. In order to have a yearly income of $ 500, he must inv

Pani-rosa [81]

Hello again!

when he invested $4000 at 5% he increased his income from 0 to 200

adding 4% of 3500 increased it by 140

totaling to $340

he has $2500 left. and he needs $160 more income

160 is 6.4% of 2500

so he needs to invest the remaining $2500 at 6.4% to get the last $160

of his income

I hope this helps, and have a nice day!

3 0

4 years ago