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Alja [10]
2 years ago
13

Factorise 20x-28 help please it's maths

Mathematics
2 answers:
antoniya [11.8K]2 years ago
8 0
Your answer is 4(5x-7)


makvit [3.9K]2 years ago
5 0
20 and 28 can be divided by 4, so just take the 4 out so the answer should be 4(5x - 7)
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A French toast recipe calls for cup milk per beaten egg. If you use 6 cups milk, how many eggs should you use?
V125BC [204]

Answer:

the answer will be 12 eggs

4 0
2 years ago
Expand the number 1120 into its corresponding exponential form. 25 · 5 · 7 52 · 8 22 · 53 · 7 2 · 5 · 7
Eduardwww [97]

Answer:

(A) 2^{5} * 5 * 7

Step-by-step explanation:

Your question formatting made it very complicated to understand the possible answers.  Please use some notation or the equation editor next time.

So, the exponential form a way to write a number using multiplications and powers.

Let's examine the various options (if I read them correctly)

(A) 2^{5} * 5 * 7 - YES!

2^{5} is 32, so 32 * 5 * 7 = 160 * 7 = 1120

(B) 5² · 8  - NO

= 25 * 8 = 200

(C) 2² * 5³ * 7 - NO

= 4 * 125 * 7 =500 * 7 = 3500

(D) 2 · 5 · 7 - NO

= 10 * 7 = 70

5 0
2 years ago
Which logarithmic equation is equivalent to the exponential equation below?
aleksandr82 [10.1K]

Option B: \ln 6=5 x is the correct answer.

Explanation:

The exponential equation is e^{5 x}=6

If f(x)=g(x), then \ln (f(x))=\ln (g(x))

Thus, the equation becomes

\ln \left(e^{5 x}\right)=\ln (6)

Applying log rule, \log _{a}\left(x^{b}\right)=b \cdot \log _{a}(x) and thus the equation becomes

5 x \ln (e)=\ln (6)

Since, we know that, \ln (e)=1, using this we get,

5 x=\ln (6)

Hence, the logarithmic equation which is equivalent to the exponential equation e^{5 x}=6 is \ln 6=5 x

Thus, Option B is the correct answer.

7 0
3 years ago
Can someone help me with these problems step by step? It’s pre-algebra so it’s not rlly that hard.
gtnhenbr [62]

Answer:

11

Step-by-step explanation:

√121=11 so right answer is B

5 0
3 years ago
C + 25 - 19 = 100 uggghh
larisa86 [58]

Answer:

c=6

Step-by-step explanation:

c+25-19=100

isolate variable...

c+25-19+19=100+19

c+25=119

c+25-25=119-25

c=6

6 0
2 years ago
Read 2 more answers
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