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3 years ago

Please help as soon as possible Will mark BRAINLIEST

Mathematics

2 answers:

Sergeu [11.5K]3 years ago

6 0

Answer:

7 squared

Step-by-step explanation:

Exponential notation means that it has to include an exponent, so you can write 7x7 as 7 squared and it would be exponential notation.

zimovet [89]3 years ago

5 0

Answer:
7^2 ( little 2 in the corner)

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Which ordered pairs are solution of the inequality?

Anarel [89]

Answer:

The answer would be A, D, and C.

Step-by-step explanation:

y=1, so

1 > 2(1) -2

1> 2-2

1>0 TRUE

NEXT.

y=3

3> 2(-1) -2

3>-2-2

3> -4 TRUE

y=-2

4>2(2) -2

4 > 4-2

4>2 TRUE!

I hope this helps!

8 0

3 years ago

Log 15 (2x − 2) = log 15 (x+9)

notka56 [123]

Answer:

$x=11$

Step-by-step explanation:

Given the equation

$\log_{15}(2x-2)=\log_{15}(x+9)$

Note that

$2x-2>0\\ \\2x>2\\ \\x>1$

and

$x+9>0\\ \\x>-9$

Combined, $x>1$

Solve the equation:

$2x-2= x+9\\ \\2x-x=9+2\\ \\x=11$

Since $11>1,$ this is the solution to the equation.

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3 years ago

Jesse deposits $4,000 into an account that earns 1.5% Simple Interest. He leaves it in

hichkok12 [17]

1.5% of 4,000$ is 60$ . 60$ times 3 years = 180$

7 0

2 years ago

High grade steel consists of 85% iron and 15% magnese. Low grade steel consists of 67% iron and 33% mag ese. NASA orders 500 ton

Mamont248 [21]

Answer:

$361\dfrac{1}{9}$ tons of high steel and $138\dfrac{8}{9}$ tons of low steel

Step-by-step explanation:

Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.

In x tons of high grade steel there are

$0.85x$ tons of iron

$0.15x$ tons of magnese

In y tons of low grade steel there are

$0.67y$ tons of iron

$0.33y$ tons of magnese

NASA orders 500 tons of steel, so

$x+y=500$

and specifies that it must be in the proportion 80% iron and 20% magnese, so

$0.85x+0.67y=500\cdot 0.8\\ \\0.85x+0.67y=400$

From the first equation,

$x=500-y$

Substitute it into the second equation:

$0.85(500-y)+0.67y=400\\ \\425-0.85y+0.67y=400\\ \\-0.18y=-25\\ \\y=\dfrac{2,500}{18}=138\dfrac{8}{9}\ tons\\ \\x=361\dfrac{1}{9}\ tons$

7 0

3 years ago

Gordon types 1,922 words in 31 minutes. Find the unit rate

Kisachek [45]

Answer:

64.2580645161 words in a minute

Step-by-step explanation:

Hope that helps!

8 0

2 years ago

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Please help as soon as possible Will mark BRAINLIEST ​

Please help as soon as possible Will mark BRAINLIEST