Estimate \sqrt(80) the nearest tenth. Then locate \sqrt(80)on a number line.Estimate \sqrt(80) the nearest tenth. Then locate \sqrt(80)on a number line.

Answer:

We can think of it as the zeros after the decimal point.

Step-by-step explanation:

Negative exponents always move the number to the right putting the decimal in front of it.

Answer:

f(7) = - 25

Step-by-step explanation:

To evaluate f(7) substitute x = 7 into f(x), that is

f(7) = - 5(7) + 10 = - 35 + 10 = - 25

Answer:

8

Step-by-step explanation:

The minus turns the base upside down

(1/4)^-3/2 = 4^(3/2)

The square root of 4 is 2

2^3 = 8

So the answer is 8.

Answer:

0.83

Step-by-step explanation:

Answer:

The atomic number is equal to the number of protons in an atom

The atomic number tells you the number of protons in one atom of an element. It also tells you the number of electrons in a neutral atom of that element. The atomic number gives the “identity “of an element as well as its location on the Periodic Table.

Step-by-step explanation:

The atomic number is the number of protons in an atom of an element. For example, krypton's atomic number is 36. This tells us that an atom of krypton has 36 protons in its nucleus.

The atomic number tells you the number of protons contained in the nucleus of an atom. Which is always equal to the number of electrons in an atom.

An atom is the smallest possible unit of a chemical element.

There are protons and neutrons in the nucleus of an atom, and electrons outside the nucleus.

The atomic number indicates the number of protons or the number of electrons.

Therefore, Atomic number tells you the number of protons contained in the nucleus of an atom. Which is always equal to the number of electrons in an atom.

Learn more about atoms here:

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Answer :0

Step-by-step explanation:a= -2 b= 5/2 c=-1/2  

so a+b+c= -2+5/2 -1/2 =0

Answer:8/3

Step-by-step explanation: parallel lines have the same slope

Answer:

PQ = 1 ft

QR = 4 ft

Step-by-step explanation:

From the picture attached,

Segment PR has been divided into two parts by a point Q.

Length of segment PR = 5 feet

Length of segment PQ = (15x - 2) ft

Length of segment QR = (5x + 3) ft

Since, PR = PQ + QR

5 = (15x - 2) + (5x + 3)

5 = 20x + 1

20x = 4

x = [tex]\frac{4}{20}[/tex]

x = 0.2

PQ = 15x - 2

     = 15(0.2) - 2

     = 3 - 2

     = 1 ft

QR = 5x + 3

     = 5(0.2) + 3

     = 1 + 3

     = 4 ft

Answer:

a. 1/2

b. 512

c. 1024

Step-by-step explanation:

The nth term of a geometric progression can be written as;

Tn = ar^n-1

where a is the first term, r is the common ratio and n is the term number

From the question;

Fifth term = ar^4 = 32

Eight term = ar^7 = 4

a. We want to find the common ratio

What to do here is that we can divide the 8th by the 5th term

ar^7/ar^4 = 4/32

r^3 = 1/8

r^3 = (1/2)^3

Thus r = 1/2

b. First term

we can make a substitution in any of the two given terms

Let’s use the fifth term

ar^4 = 32

a * (1/2)^4 = 32

a * 1/16 = 32

a = 16 * 32

a = 512

C. Sum of the first 50 terms

To calculate this, we use the sum of terms formula

Sn = a(1- r^n)/1-r

a = 512 , n = 50 and r = 1/2

Making the substitution;

Sn = 512(1-(1/2)^50)/1-1/2

Kindly note that (1/2)^50 will be infinitesimally small and will be close to zero

So we can approximate (1/2)^50 to be zero

Hence;

Sn = 512(1-0)/0.5

Sn = 512/0.5

Sn = 1024

Answer:

L = 48

Step-by-step explanation:

Given that L varies directly with Z² , then the equation relating them is

L = kZ² ← k is the constant of variation

To find k use the condition L = 12 when Z = 2 , then

12 = k × 2² = 4k ( divide both sides by 4 )

3 = k

L = 3Z² ← equation of variation

When Z = 4 , then

L = 3 × 4² = 3 × 16 = 48

Answer:

9x10000 or 9.0 x 10^4

Step-by-step explanation:

6x104+3x104

Simplifies to:

9x10000

=9x10000

Mark Brainliest?

Answer:

9.0 x 10^4

Step-by-step explanation:

(6.0 x 10 ^4) + (3.0 x 10 ^4)

=> 6 x 10000 + 3 x 10000

=> 10000(6+3)

=> 9(10000)

=> 9 x 10^4

=> 9.0 x 10^4

Answer:

1,3

Step-by-step explanation:

Sorry if my English is bad

or if my answer is wrong but from my understanding,

as you can recognize from the photos, we need to understand what a collinear is. Collinear are points that are lying in the same straight line. Thus, we can transform the ratio to fractions which means 1 : 3 into 1/3

Hence, the coordinate R is 1/3 between P and S.

Therefore, to determine coordinate R, we must use the formula that is provided. P is (X1, Y1), S is (X2,Y2), M1 is 1 or the Numerator and M2 is 3 or The denominator.

Answer:

the part you crossed out makes it look like a person's eyes and eye brows lol

Step-by-step explanation:

Answer:

The answer is C, zero solutions.  

Step-by-step explanation:

y = 5/2x + 2

2y = 5x + 8

Multiply 2 to the first equation.  

2y = 5x + 4

Compare it with the other equation

2y = 5x + 4

2y = 5x + 8

Cancel 2y and 5x on both sides.  

Remaining:

4 = 8

4 ≠ 8.  Therefore, the answer is C, zero solutions.  

Answer: I think the answer is false

Answer:

the correct answer is true

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

sec (thita) = squrt (5)

squaring on both sides:

sec^2 (thita) = 5 - equation 1

1 + tan^2 (thita) = 5

tan^2 (thita) = 4

tan (thita) = 2.

= tan (thita) - squrt(5)sin(thita)

= 2 - squrt(5) x 2/ squrt(5)

= 0

from eqn - 1

sec(thita) = squrt(5)

cos(thita) = 1/ squrt(5)

sin(thita) = squrt ( 1- 1/(squrt (5))^2)

sin(thita) = 2/ squrt(5) .

Answer:

x = y/2 - 1

Step-by-step explanation:

Solve for x:

2 x + 3 = y + 1

Hint: | Isolate terms with x to the left hand side.

Subtract 3 from both sides:

2 x = y - 2

Hint: | Solve for x.

Divide both sides by 2:

Answer: x = y/2 - 1

Answer:

22.7 kg

Step-by-step explanation:

Using a conversion factor:

50 lb × (1 kg / 2.2 lb) = 22.7 kg

Using a proportion:

1 kg / 2.2 lb = x kg / 50 lb

2.2x = 50

x = 22.7

Answer: 4/9 of the class are boys and 5/9 of the class are girls.

Step-by-step explanation:

Answer:

12+ 1.50r = 42

1.50r = 42-12

1.5r = 30

r= 30/1.5 = 20

Step-by-step explanation:

Answer:

A. and B.

Step-by-step explanation:

A natural number by definition is a number that spans from 1 to 100 it can't have decimals or negative numbers.

A. Natural number, the square root of 99 is 11 which is in the span of 1 to 100.

B. includes a natural number when you divide 60/15 you get 4 which is in the span of 1 to 100.

C. Incorrect, includes a negative number so it's not a natural number.

D. Not a natural number it includes decimals.

Answer:

(7x7x7x7x7x7x7)x(7x7x7x7x7)

Step-by-step explanation:

The simplified version of [tex]7^6*7^5[/tex] is [tex]7^{11}[/tex]

The rule of multiplying exponents with like terms is to add the exponents.

If you want the fully simplified answer, its 1977326743

Answer: She added 7x and 3y

Step-by-step explanation: The final answer should be 7x + 3y, not 10xy.

Answer:

She added 7x and 3y

Step-by-step explanation:

the final answer answer should be 7x + 3y, not 10xy. bc that is the mistake and ima give credit to the person who answered first bc it looks like i took the answer from them and i did not

have a blessed day byeee

Answer:

172.05

Step-by-step explanation:

formula to find regular pentagon=1/4 root 5(5+2root5)a^2

Answer:

Step-by-step explanation:

Answer:

31.50 for 14 tickets

Step-by-step explanation:

We can use ratios to solve

4 tickets          14 tickets

--------------   = --------------------

9 dollars          x dollars

Using cross products

4x = 9*14

4x =126

Divide each side by 4

4x/4 = 126/4

x =31.50