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Natali [406]
3 years ago
7

Answer fast please I want to be done with my hw

Mathematics
1 answer:
Ket [755]3 years ago
6 0

Answer:b

Step-by-step explanation: $0.50 a year

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For which values of a the system has at least one solution: x≤7 x≥a urgent pls help now
allochka39001 [22]

Answer:

We have the system:

x ≤ 7

x ≥ a

Now we want to find the possible values of a such that the system has, at least, one solution.

First, we should look at the value of a where the system has only one solution:

We can write the 2 sets as:

a ≤ x

x ≥ 7

So, writing both together:

a ≤ x ≤ 7

if a is larger than 7, we do not have solutions.

then a = 7 gives:

7 ≤ x ≤ 7

Here the only solution is 7.

Now, if a is smaller than 7, for example 5, we have:

5 ≤ x ≤ 7

Now x can take different values, so we have a lot of solutions.

Then the restrictions for a, such that the system has at least one solution, is:

a ≤ 7.

6 0
3 years ago
NEEEEEEEEEEEEEEEEEEEDDDDDDDD HELP
Makovka662 [10]

Answer:

Step-by-step explanation:

1.

19² = 17² +x²

19² - 17² = x²

√361-289 =x

√72 = 8.5 ≈ x

Area = base*h/2 = 17*8.5/2 ≈ 72.3

Perimeter = 19+17+8.5= 44.5

and so on...

2.

x²= 5² +13²...

A= 5*13/2 =...

P= 5+13+x=...

3.

20² = 10² +x²...

A=10*x/2=...

P=20+10+x=...

4.

x² = 5² +14²...

A=5*14/2 =...

P= 5+14+x = ...

8 0
2 years ago
What was the purpose of the townshend program
kykrilka [37]

This was to raise revenue for the British Empire by taxing the North American colonies.

4 0
2 years ago
Factorise fully 28y2 – 24y
Fittoniya [83]

Answer:

4y(7y - 6)

Step-by-step explanation:

4 0
2 years ago
Homework Question Help Pls
STatiana [176]

Answer:

3.07091228=x

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

tan theta = opp/ adj

tan 21 = x/8

8 tan 21 =x

3.07091228=x

5 0
3 years ago
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