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aliina [53]
3 years ago
5

What is 9 · y − 8 ÷ 4 when y = 5??

Mathematics
1 answer:
Andrew [12]3 years ago
5 0

Answer:

43 if you follow the steps of PEMDAS

Step-by-step explanation:

9x5=45. 8÷4=2. 45-2=43

Hope this helps!

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2ax+1=ax+5 i need help with my work
OLga [1]
2ax + 1 = ax + 5

First, subtract 1 from both sides. / Your problem should look like: 2ax = ax + 5 - 1
Second, simplify ax + 5 - 1 to ax + 4. / Your problem should look like: 2ax = ax + 4
Third, subtract ax from both sides. / Your problem should look like: 2ax - ax = 4
Fourth, simplify 2ax - ax to ax. / Your problem should look like: ax = 4
Fifth, divide both sides by a. / Your problem should look like: x = \frac{4}{a}

Answer: x = \frac{4}{a}

5 0
3 years ago
The lateral area of a cone is 558 pi cm^2. The radius is 18 cm. Find the slant height to the nearest tenth
djyliett [7]

Answer:

31.

Step-by-step explanation:

π(18)l = 558π

l = 558/18 = 31

Therefore the answer is 31.

6 0
3 years ago
How would you factor a quadratic expression like 9x^2-4
Ganezh [65]

Hello, we need to see it as a difference of two squares as we know that for all a and b real numbers

a^2-b^2=(a-b)(a+b)

So, here

9x^2-4=(3x)^2-2^2=(3x-2)(3x+2)

Voila !

Thank you

7 0
4 years ago
What is the percent of change from 70 to 14?
Tom [10]

Answer: -80%

Step-by-step explanation:

((y2 - y1) / y1)*100 = your percentage change

(where y1=start value and y2=end value)

((14 - 70) / 70) * 100 = -80 %

4 0
3 years ago
50 POINTS !!
snow_tiger [21]
Hopes this helps:

Answer: 41

Please mark as brainlist if it’s right.
6 0
3 years ago
Read 2 more answers
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