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2 years ago

Plz help fast!!!! will mark brainliest if correct

Mathematics

1 answer:

Marta_Voda [28]2 years ago

7 0

Step-by-step explanation:

(g+f)(x) ie option B

-2+1 = -1

1-2 = -1

4-5 = - 1

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Please help ASAP Questions 1 and 2 plzzzzz

liubo4ka [24]

Take the sequence in 1a

The 10th term is 31

The 20th is 61

If you wanted to find these by continuing the series, you'd have to add 3 to the last number in the series, then 3 more, then 3 more, until you reach the 20th term. By this point, you will have added 3 to the first term 19 times. That's where the formula comes from. So here,

a = 4, the first term

n = 20, the number of the term we need

d = 3, how much we're adding each time between one term and the next

Then, to get the 20th term,

4 + (20 - 1) • 3 = 4 + (19 • 3) = 4 + 57 = 61

Answers

The 10th and 20th terms of each sequences are

a. 31; 61

b. 48; 98

c. 47; 97

(in c, you're adding the same d as in the sequence above, but your first term is one unit less)

d. -25; -75

(same thing as before, but now, d is negative)

e. 11.5; 16.5

(with d=1/2 or 0.5)

f. 6+1/2; 8+1/2

Use these to check your answers after applying the formula, but know that I calculated on the fly and didn't check these.

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3 years ago

Help?? Giving Brainly

Sphinxa [80]

The second one is the answer

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2 years ago

Read 2 more answers

Least to greatest 4 1/3, the square root of 43, 12/4, 4.13

kicyunya [14]

Least to greatest
12/4, 4.13, 4 1/3 , the square root of 43

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2 years ago

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Triangle DEF (not shown) is similar to ABC shown, with angle B congruent to angle E and angle C congruent to angle F. The length

Bezzdna [24]

Answer:

Area of ΔDEF is $45\ cm^2$ .

Step-by-step explanation:

Given;

ΔABC and ΔDEF is similar and ∠B ≅ ∠E.

Length of AB = $2\ cm$ and

Length of DE = $6\ cm$

Area of ΔABC = $5\ cm^2$

Solution,

Since, ΔABC and ΔDEF is similar and ∠B ≅ ∠E.

Therefore,

$\frac{Area\ of\ triangle\ 1}{Area\ of\ triangle\ 2} =\frac{AB^2}{DE^2}$

Where triangle 1 and triangle 2 is ΔABC and ΔDEF respectively.

If two triangles are similar, then the ratio of the area of both triangles is proportional to the square of the ratio of their corresponding sides.

$\frac{5}{Area\ of\ triangle\ 2} =\frac{2^2}{6^2}\\ \frac{5}{Area\ of\ triangle\ 2}=\frac{4}{36}\\ Area\ of\ triangle\ 2=\frac{5\times36}{4} =5\times9=45\ cm^2$

Thus the area of ΔDEF is $45\ cm^2$ .

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3 years ago

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Hello please help i’ll give brainliest

dlinn [17]

Answer:

<h2>The sun and the earth's interior </h2>

Step-by-step explanation:

As,

The Earth has two basic sources of energy -

Earth's Interior- hat reaching the Earth from the Sun (Solar Energy) and that reaching the surface of the Earth the Earth itself (Internal or Geothermal Energy). 
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2 years ago