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2 years ago

Divide 15 into thirds and subtract from 14 divided in half

Mathematics

1 answer:

Maurinko [17]2 years ago

8 0

-2, because 15 divided by 3 is 5 and 14 divided by 2 is 7 so 5 minus 7 is -2

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What is the product of (5.1 × 103) • (3.2 × 103)? A. 16.32 × 106 B. 1.632 × 107 C. 16.32 × 109 D. 1.632 × 1010

VARVARA [1.3K]

Since multiplication is commutative, you can change the order of the factors:

$5.1 \times 10^3 \cdot 3.2 \times 10^3 = 5.1 \cdot 3.2 \times 10^3 \cdot 10^3$

So, the numeric parti is simply

$5.1 \cdot 3.2 = 16.32$

For the powers of ten, use the rule $a^b\cdot a^c=a^{b+c}$ to write

$10^3 \cdot 10^3 = 10^{3+3} = 10^6$

So, the answer is

$16.32 \times 10^6$

To write the answer is proper scientific notation, you can write it as

$1.623 \times 10^7$

So, answers A and B represent the same number, and they are both correct. If you need the answer to be written in rigorous scientific notation, then answer is B.

7 0

2 years ago

Read 2 more answers

In △ABC, m∠A=16°, m∠B=49°, and a=4. Find c to the nearest tenth.

mars1129 [50]

Answer:

c=13.2 units

Step-by-step explanation:

step 1

Find the measure of angle C

Remember that the sum of the internal angles of a triangle must be equal to 180 degrees

A+B+C=180°

substitute the given values

16°+49°+C=180°

65°+C=180°

C=180°-65°=115°

step 2

Find the measure of c

Applying the law of sines

c/sin(C)=a/sin(A)

substitute the given values and solve for c

c/sin(115°)=4/sin(16°)

c=4(sin(115°))/sin(16°)

c=13.2 units

8 0

2 years ago

Let f(x) = - 13x + 12 and g(x)= x² + 2.--Find f(3)/g(3).f(3)/g(3) = (?)(Type an integer or a simplified fraction.)

mel-nik [20]

We have the next two equations:

$f(x)=-13x+12$

And

$g(x)=x^2+2$

We need to find f(3)/g(3)

First, let's find f(3):

$f(3)\text{ = -13(3)+12 = -27}$

Then g(3):

$g(3)=(3)^2+2\text{ = 11}$

Now, the equation f(3)/g(3) :

$\frac{f(3)}{g(3)}=\frac{-27}{11}$

-27/11 is the result.

3 0

1 year ago

how many lines of symmetry does does this triangle have ?

Maurinko [17]

Answer:

D..... 3 lines of Symmetry

6 0

3 years ago

Angle sum theory find Y

kompoz [17]

<h3>Answer:</h3>

<h3>Step-by-step explanation:</h3>

The angle sum theory says that the sum of all the interior angles in a triangle is 180 degrees.

Finding X

To solve for y, we must first find x. This way we know 2 of the interior angles. Luckily, angle x is a part of a linear pair.

Linear Pairs are 2 adjacent angles that create a straight line together. This means that the sum to 180 degrees.

Angle x and the angle with a measurement of 115 form a linear pair. Thus, we can create an equation to find x.

115 + x = 180

By subtracting 115 from both sides we know that x = 65.

Solving for Y

Now that we know x, we can find y. We know that one of the interior angles is 65 and that the other is 90 degrees. The square marking the bottom angles in the middle show that they are right angles.

Right angles are usuaslly denoted with a square drawn in the angle and have a measurement of 90 degrees.

Lastly, we can create a formula to find y with the angle sum theory.

90 + 65 + y = 180

Combine like terms

155 + y = 180

Subtract 155 from both sides

y = 25

This means that the angle y is 25 degrees.

4 0

1 year ago