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True [87]
2 years ago
9

Two consecutive even numbers are such that five times the smaller number , subtracted from eight times the bigger gives 58. Find

the two Numbers? show working​
Mathematics
1 answer:
olga55 [171]2 years ago
6 0

Answer:

14\text{ and }16

Step-by-step explanation:

Let the smaller number be x. Since they are consecutive even numbers, the larger number can be represented by x+2.

Therefore, we have the following equation:

8(x+2)-5x=58,\\8x+16-5x=58,\\3x=42,\\x=\boxed{14}

Thus, the larger number is x+2=\boxed{16}

You might be interested in
Please help me with this math problem!
Mice21 [21]
W=x
L=2x+17

Double everything since we need to lengths and two widths to find the perimeter

2x+17+2x+17+x+x = 76
Combine like terms

6x+34=76
Solve for x
First step is subtract 34 from both sides

6x=42
Next you divide both sides by 6 in order to get x by itself

X=7

Now you plug in 7 into the x’s in length and width

W=7 cm
L=31 cm

THE WIDTH IS 31 CM

Check:

7+7+31+31 = 76 cm
It equals 76 cm just like the problem said so therefore it is right.

7 0
2 years ago
In the equation x+12=30 does x=16 explain your answer
denpristay [2]
No x does NOT equal 16. you would substitute x for 16 which gives you 16+12. That equals 28 not 30. The correct answer is x=18
4 0
2 years ago
18. You hear your little brother yelling from the other room about how his stupid phone has been
Savatey [412]

Answer:

40% I think

Step-by-step explanation:

if it was on 20% and it's only gone up 20% it would now be at 40% but it still only has gone up 20%

7 0
3 years ago
Prove that sin20 sin40 sin60 sin80=3/16
sineoko [7]
<span> sin20 * sin40 * sin60 * sin80

since sin 60 = </span><span> √3/2

</span>√3/<span>2 (sin 20 * sin 40 * sin 80)
</span>√3/<span>2 (sin 20) [sin 40 * sin 80]
</span>
Using identity: <span>sin A sin B = (1/2) [ cos(A - B) - cos(A + B) ]

</span>√3/<span>2 (sin 20)  (1 / 2) [cos 40 - cos 120]
</span>√3/4<span> (sin 20) [cos 40 + cos 60]
</span>
Since cos 60 = 1/2:

√3/4<span> (sin 20) [cos 40 + (1/2)]
</span>√3/4 (sin 20)(cos 40) + √3/8<span> (sin 20)
</span>
Using identity: <span> sin A cos B = 1/2 [ sin(A + B) + sin(A - B) ]

</span>√<span>3/4 (1 / 2) [sin 60 + sin (-20)] + </span>√3/8<span> (sin 20)
</span>
Since sin 60 = √3/<span>2

</span>√3/8 [√3/2 - sin 20] + √3/8 (sin 20)
3/16 - √3/8 sin 20 + √3/8<span> sin 20
</span>
Cancelling out the 2 terms:
3/16

Therefore,  sin20 * sin40 * sin60 * <span>sin80 = 3/16</span>

6 0
3 years ago
Could someone please help
BigorU [14]

Answer:

38 sq ft

Step-by-step explanation:

Add together the two triangles plus the rectangle area.

A(triangle1) = 1/2 bh = 1/2 4*4 = 8 sq ft

A(triangle2) = 1/2 bh = 1/2 4*3 = 6 sq ft

A(rectangle) = lw = 8*3 = 24 sq ft

A(total) = 8 + 6 + 24 = 38 sq ft

4 0
3 years ago
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