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3 years ago

It’s a easy mathswatch questionnnnn helpppppp meeeeeeeee

Mathematics

1 answer:

pychu [463]2 years ago

8 0

Answer:

15, 6 and - 3

Step-by-step explanation:

Given x - y = 3 , then

(a)

5(x - y) = 5(3) = 15

(b)

2x - 2y ← factor out 2 from each term

= 2(x - y) = 2(3) = 6

(c)

y - x ← factor out - 1 from each term

= - 1(x - y) = - 1(3) = - 3

You might be interested in

What is 4/5 times 7/12

slamgirl [31]

Answer:

$\frac{28}{60}$ ( $\frac{7}{15}$ )

Step-by-step explanation:

b/c 4/5*7/12

means 4*7 and 5*12

then28/60

hope it's helpful

THANK YOU.

3 0

2 years ago

Please help me with math

Marat540 [252]

The area of triangle BMN is 124.7 square centimeter.

<h3>What are similar triangles?</h3>

Similar triangles are triangles that their corresponding angles are equal and the ratio of their corresponding lengths are equal. They are often similar When at least Two angles are equal or The ratio of any corresponding lengths are same.

Analysis:

AB = AC = BC = 50cm

AH = AC/2 = 50/2 = 25cm

From Δ ABH, using Pythagoras theorem to find BH.

$(BH)^{2}$ = $(AB)^{2}$ - $(AH)^{2}$

$(BH)^{2}$ = $50^{2}$ - $25^{2}$

$(BH)^{2}$ = 2500 - 625

$(BH)^{2}$ = 1875

BH = $\sqrt{1875}$ = 43.3cm

ΔBMN and BHC are similar,

so, BM/BH = MN/HC

BM/43.3 = 12/25

25BM = 12 X 43.3

BM = 519.6/25 = 20.78cm

Area of ΔBMN

= 1/2(MN)(BM) = 1/2 x 12 x 20.78 = 124.7 square centimeter

Learn more about similar triangles: brainly.com/question/2644832

#SPJ1

4 0

1 year ago

Is the decimal for 4 over 3 a repeating decimal ? expain

Alenkasestr [34]

Yes, the decimal form of $\frac{4}{3}$ is indeed a repeating decimal. The expression is equivalent to $1 \frac{1}{3}$ , which is also 1.3333333 or "1.3 bar", signifying that the 3 will repeat infinitely.