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Over [174]
3 years ago
15

5. 6a+b = 4 5a + 2b = 1

Mathematics
1 answer:
Eduardwww [97]3 years ago
4 0

Answer:

X = 1

Y = -2

Step-by-step explanation:

Use simultaneous equations to work out.

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What is the least common mulitiple of 6 and 7
Anna35 [415]

Answer:

hi! your answer should be 42.

5 0
3 years ago
Read 2 more answers
1-sin60÷cos60=1-Tan30÷1+Tan30
ipn [44]

Step-by-step explanation:

LHS=(1-sin60)/cos60

=(1-√3÷2)/1÷2

=2(1-√3÷2)

=2-√3

RHS=(1-tan30)/(1+tan30)

={1-(1÷√3)}/{1+(1÷√3)}

={(√3-1)/√3}/{(√3+1)/√3}

=(√3-1)/(√3+1)

={(√3-1)(√3-1)}/{(√3+1)(√3-1)}

=(3-√3-√3+1)/(3-1)

=(4-2√3)/2

=2-√3

Therefore LHS=RHS

8 0
3 years ago
092:15 PMEach month, henry weeds gardens for 15 hours and mows lawns for x hours.For each job, he is paid $9 per hour. He wants
ankoles [38]

We know that he weeds gardens for 15 hours, and mows lawns for x hours.

If he wants to earn $252 per month, we can express the following

9\cdot15+9x\ge252

Now, we solve for x

\begin{gathered} 135+9x\ge252 \\ 9x\ge252-135 \\ 9x\ge117 \\ x\ge\frac{117}{9} \\ x\ge13 \end{gathered}<h2>Hence, he has to mow lawns for 13 hours to earn at least $252.</h2>
6 0
1 year ago
mr. bird leaves for a walk at 7:50 a.m. she allows 25 minutes later what time does she arrive to work​
Tatiana [17]

Answer: 8:15

Step-by-step explanation:

If she leaves at 7:50 and arrives to work 25 minutes later, then she will get there at 8:15.

Something easy you could use:

7:50 25

+ 10 -10

____ ___

8:00 15

+ 15 -15

____ ____

8:15 0

5 0
3 years ago
-9(x+8)+81=13-10x<br> what does x equal?
ankoles [38]

The answer to the problem is x= -4

7 0
3 years ago
Read 2 more answers
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