3 years ago

Help I will make you a brainllest :)

Mathematics

2 answers:

Anna71 [15]3 years ago

6 0

Answer:

140

Step-by-step explanation:

done it before and had teacher show me answer sheet

Zielflug [23.3K]3 years ago

4 0

Answer:

140

Step-by-step explanation:

Since m∠2 is 40°, then the m∠1 is also 40°. With that, ∠1 and ∠5 are supplementary, so we have 180 - 40 = 140°

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What percent of 70 equals 21

Misha Larkins [42]

Answer:

30% of 70 = 21

Step-by-step explanation:

21/70 = .3

.3=30%

4 0

3 years ago

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Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in the simplest form 15,1

Tatiana [17]

Step-by-step explanation:

the sequence is arithmetic due to the common difference that is equal

d=11-15=7-11=-4

a(n) = a1 +(n-1)d

a1=15

Then :

a(n) = 15+(n-1)-4

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3 years ago

What is 12÷2/5? Ty to everyone helping

Dvinal [7]

Answer:

<u>1.2</u> is the answer.

Step-by-step explanation:

12/2=6

6/5=1.3

Have a nice day!

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3 years ago

Plz help ive been stuck on this question for so long

luda_lava [24]

Multiply each exponent inside the parentheses by the exponent on the outside:

8^(-5 x -4) / 2^(-2 x -4)

8^20 / 2^8

The answer is C

4 0

3 years ago

In un trapezio rettangolo la base minore, il lato obliquo e l'altezza misurano rispettivamente 60 cm. 95 cm è 76 cm. Calcola il

KengaRu [80]

Answer:

$2p=348 cm\: S=6726 cm^{2}$

Step-by-step explanation:

Ciao, come stai?

1) Per prima cosa, dobbiamo trovare la misura della base più grande. Scomponendo la figura possiamo visualizzare un triangolo e un quadrato. Ci sono somiglianze con gli angoli. Quindi è un triangolo rettangolo. Applichiamo il teorema di Pitagora:

$a^2=b^2+c^2\\95^2=b^2+76^2\\57=b$

2) Perimetro:

$2p=60+57+76+60+95\\2p=348 cm$

3) L' area

$\frac{(B+b)h}{2} =\frac{(117+60)76}{2} =6726 \:cm^{2}$

8 0

4 years ago