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marissa [1.9K]
3 years ago
14

PLEASEEEE PLEASEEEE HELPPPP

Mathematics
1 answer:
ad-work [718]3 years ago
4 0

Answer:

dont understand clearly

Step-by-step explanation:

dont understand clearly

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Last year the depth of the river was 4.2 feet deep. This year it dropped 25%. Find the depth of the river this year to cross it.
Novosadov [1.4K]

Answer:

The river is 3.15 feet deep.

Step-by-step explanation:

First let's recognize what we need to find: the depth of the river

We know last year the river was 4.2 feet deep, but it dropped 25%. This means we also need to find how much it dropped. To find this, we need to know what 25% of 4.2 is. Write an equation for this.

y = 25% of 4.2

y = 0.25 • 4.2

y = 1.05

This means that the river dropped 1.05 feet. To know its depth now, we need to subtract 1.05 from 4.2. Write an equation for this.

d = 4.2 - 1.05

d = 3.15

The river is 3.15 feet deep.

Hope this helps!

4 0
3 years ago
An isosceles triangle is such that each of the base angles is twice the vertical angle. find the angles of the triangle​
frosja888 [35]

Answer:

2x + 2x + x =180
x = 36 degree

Step-by-step explanation:

6 0
2 years ago
Macy is tutoring students in mathematics during her summer break. She charges $20 for a 30 minute session and $35 for an hour. T
Zanzabum
If she only had 1 hour sessions she had 8 sessions in the first week because if you do 35 times 8 you get 280. 
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3 years ago
Simplify the expressions by distributing the negatives and combining like terms ​
Illusion [34]

Answer:

-2 times 6d=-12d

-2 times -11= 22

Answer:  -12d+22

Step-by-step explanation:

5 0
3 years ago
Eight times the sum of a number and -2 is the same as nine times the number. Find the number
Alik [6]

Answer:

let \: the \: unknown \: number \: be \: x \\ 8 (x +  (- 2) = 9 \times x \\ 8  (x - 2) = 9 \times x \\ 8x - 16 = 9x \\  - 16 = 9x - 8x \\  - 16 = x \\ x =  - 16

5 0
3 years ago
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