All categories

4 years ago

A triangle has angles measuring 15° and 45°. What is the measurement of the triangle’s third angle?

2 answers:

6 0

First you need to know that the internal angles of a triangle always equals 180°. Therefore:

15+45= 90°

Then since the angles should equal 180, you do:

180-90=90

So the missing angle equals 90°

lara31 [8.8K]4 years ago

6 0

Answer:

120 degrees

Step-by-step explanation:

180-15-45=120

You might be interested in

Y = x² + 5x +4 Factor

mariarad [96]

Answer:

(x + 1)(x + 4)

Step-by-step explanation:

We want to factor x² + 5x +4 into two binomial factors. Note that 1*4 = 4 and that 1 + 4 = 5, so:

y = x² + 5x +4 = (x + 1)(x + 4)

6 0

3 years ago

Which of the following mathematical symbols represents "the opposite of"?

asambeis [7]

Answer:

the minus sign

Step-by-step explanation:

In mathematics, the symbol for the additive opposite is the minus sign

The symbol for the multiplicative opposite is the inverse operation 1/x (I think)

So, yes, specific opposites have symbols, BUT...

Just saying "the opposite of" is too blurry to find one word that represents that.

7 0

3 years ago

Read 2 more answers

1,000, 2% , 9 months find the simple interest

Anastasy [175]

Answer:

I = 15

Step-by-step explanation:

The formula for finding interest is I=PRT.

I = Interest

P = Principal (dollars)

R = Rate (percent in decimal form)

T = time (in years)

So, I = 1000×0.02×0.75

Multiply those numbers, and get 15 as interest.

4 0

3 years ago

a single carton of juice cost $4.20. A special offer pack of 3 cartons cost $9.45. Jace bought a special offer instead of 3 sing

Ostrovityanka [42]

The 3 pack cost $9.45

3 single cartons would have cost: 3 x 4.20 = $12.60

Difference in cost: 12.60 - 9.45 = $3.15

Percent savings : 3.15/ 9.45 = 0.3333

0.333 x 109 = 33.33%

Round the answer as needed

7 0

3 years ago

A new law requires that 15% of an individuals income be invested in the stock market. Your accounts show that you need to put $4

Arisa [49]

Answer:

This year's earnings were $2900

Step-by-step explanation:

Percentage calculation

If a number N is given and we need to calculate X percent of it, it's given by

$\displaystyle P=N\frac{X}{100}$

But what happens if we already know P and want to compute N? We simply solve for N

$\displaystyle N=P\frac{100}{x}$

The question tells us we need to put $435 in the stock market this year, and it's 15% of the yearly income. We have P=435, X=15, let's compute N

$\displaystyle N=435\frac{100}{15}$

$\boxed{N=\$2900}$

This year's earnings were $2900

6 0

3 years ago