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1 year ago

Please help I have an timer

Mathematics

2 answers:

abruzzese [7]1 year ago

3 0

Answer:

1,318

Step-by-step explanation:

Regular columnar addition.

xenn [34]1 year ago

3 0

Answer: B.) 1318

Step-by-step explanation:

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Find the value of x when : 2^30/8^9=2^x

artcher [175]

Answer:

x = -3

Step-by-step explanation:

Okay, the first thing to do is get that 8 away from the fraction. How can we do it? When you have 2³ you have 8, is the same thing, so let's do it:

2³⁰/(2³)⁹ = 2^x

When you have a number with the shape (a^x)^y, you can write it as a^(x•y), so:

(2³)⁹ = 2^3•9 = 2²⁷

Now we have:

2³⁰/2²⁷ = 2^x

When you have a division like this: (a^x)/(a^y), you can write it as a^(x-y), so:

2^(30-27) = 2^x

2^-3 = 2^x

Now you know that x = -3

3 0

2 years ago

Find 80 percent of 25

Elden [556K]

Use 80% *25 than you can get 20.

3 0

2 years ago

Find the percent change.<br> 155 pounds to 130 pounds.

Romashka [77]

Answer:

130 pounds is about 84% of 155

8 0

2 years ago

Michaels is using the rectangular board shown below to make a table top

valina [46]

C it’s 366 cm that’s how you would know the rectangular board

6 0

2 years ago

A high school has a total of 850 students. there are 60 more female students than there are make students?

Mrac [35]

Hey. Let me help you on this one.

Let's break this problem down so it's easier for us to comprehend it.

There are 850 students in the school, and the amount of female students equals to the amount of male students + sixty additional females.

Amount of students in school = 850 students

Male students = $X$

Female students = $X+60$

Let's form an equation so we can work with what we have.

$X+(X+60)=850$

Subtract 60 from both sides.

$X+X=790$

Simplify

$2X=790$

Divide both sides by 2.

$X=395$

Answer: There are 395 male students, and 455 female students.

3 0

2 years ago