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svetoff [14.1K]
2 years ago
10

Please an someone help me 5(−3.4k−7)+(3k+21)

Mathematics
2 answers:
Shalnov [3]2 years ago
6 0

Answer:

4

Step-by-step explanation:

saul85 [17]2 years ago
3 0

Answer:

4.5k

Step-by-step explanation:

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X
Ede4ka [16]

Answer:

Step-by-step explanation:

Sum of all three angle in a triangle=180

Given angles are 35°,45°

Let the remaining angle =x

So 35 +45+X=180

X=180-80

X=100°

Remaining angle =X=100° is the answer

3 0
3 years ago
The sides of a rectangle are in the ratio 5 : 4. If the perimeter of the rectangle is 360 cm , find its area
djverab [1.8K]

Answer:

Step-by-step explanation:

let, the length is z

thus the ratio will be 5z : 4z

perimeter = 2 (a + b)

360 = 2 ( 5z + 4z )

180 = 9z

z = 20 cm

length = 100 cm and width = 80cm

area = length * width

area = 100*80

area = 8000cm²

4 0
2 years ago
A store has clearance items that have been marked down by 60% they having a sale, advertising an additional 30% off clearance it
bagirrra123 [75]

The original price is 100% of the price. If the price is marked 60% off, then you pay 40% of the original price.

An item costs x dollars.

With the 60% off discount, it now costs 40% of x, or 0.4x.

Now you apply a 30% discount.

For the second discount, consider the price 0.4x to be the new original price. If the price is now discounted 30%, you will pay 70% of the new original price.

Start with 0.4x.

Now calculate 70% of 0.4x.

70% of 0.4x = 0.70 * 0.4x = 0.28x

After applying the 60% discount and the 30% discount, the item that originally cost x now costs 0.28x. 0.28x is the same as 28% of x. The amount you pay is 28% of the original price.

Answer: 28%

3 0
3 years ago
Question 11
mamaluj [8]
The first one is the correct answer

Y-7=-3(x+2)
6 0
3 years ago
Seahorses change color and swim together in predetermined ways before mating. These behaviors are called
Anastasy [175]
The answer is c.
i have sea horses
7 0
3 years ago
Read 2 more answers
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