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3 years ago

Rewrite the numbers.then add 27+19 +

2 answers:

8 0

Twenty-seven plus nineteen? or 20+7+10+9? or 2 tens and 7 ones + 1 ten and 9 ones? I'll do all of them.

twenty-seven plus nineteen equals forty-six
20+7+10+9=40+6
2 tens and 7 ones + 1 ten and 9 ones = 4 tens and 6 ones.
Hope this helps!

KATRIN_1 [288]3 years ago

8 0

You add the 2 numbers in the question: 27+19=46, so your answer is 46. HOPE THIS QUESTION HELPS!

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2 years ago

Read 2 more answers

Is (-a + b)² = a² - 2ab + b² right or wrong, and why?

antiseptic1488 [7]

Answer:

$\huge\boxed{\sf Right.}$

Step-by-step explanation:

$(-a+b)^2$

Let's apply the formula (x+y)² = x² + 2xy + y²

Here, x = -a and y = b

So,

= (-a)² + 2(-a)(b) + (b)²

= a² - 2ab + b²

Hence, it has been proved that (-a + b)² = a² - 2ab + b².

$\rule[225]{225}{2}$

Hope this helped!

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2 years ago

Mercy marks up all goods she sells by 30%.What is the mark up of a hat that cost her $42?

Delvig [45]

Answer:

$12.60

Step-by-step explanation:

42/30%=42/0.3=$12.60

Brainleist plz

(comment if spelling is wrong anywhere)

3 0

3 years ago

What is the value of x?<br><br><br><br> Enter your answer in the box.

Grace [21]

The shapes are similar.
When two figures are similar, the ratios of the lengths of their corresponding sides are equal.
Therefore,
$\frac{42}{(15 + 42)} = \frac{x}{10 + x}$

Simplify:
$\frac{42}{57} = \frac{x}{10 + x}$
Cross multiply:
42(10+x) = 57x
420 + 42x = 57x
420 = 57x - 42x
420 = 15x
x = (420÷15)
x = 28

3 0

3 years ago

Nora measured the angles of a triangle. Two of the angles measured 20° What was the measure of the third angle of Nora’s triangl

aivan3 [116]

Answer:

140°

Step-by-step explanation:

The sum of angle of a triangle is equal to 180°.

Two of the angles measured 20°.

We need to find the measure of the third angle of Nora’s triangle. let the third angle is x. So,

20+20+x = 180

40+x = 180

x = 180-40

x = 140°

So, the third angle of the triangle is 140°.

8 0

2 years ago