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lara31 [8.8K]
3 years ago
9

Elaine is 8 years younger than her brother Tyler. The sum of their age is 34. Define a variable and them write and solve an equa

tion to find Elaine's and Tyler's ages.
Mathematics
1 answer:
andreev551 [17]3 years ago
6 0
34÷T-8= a is the variable
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I need help with this question
nikdorinn [45]
The area of each triangular face is
.. A = (1/2)*b*h
.. Aside = (1/2)*(6 cm)*(5 cm) = 15 cm^2

The area of the triangular base is
.. Abase = ((√3)/4)*s^2 = (√3)/4*(6 cm)^2 = 9√3 cm^2

The total surface area is the base area plus the area of the three sides.
.. Atotal = Abase + 3*Aside
.. = 9√3 cm^2 +3*15 cm^2
.. = (45 +9√3) cm^2
.. ≈ 60.6 cm^2


Actually, there's an error in the picture. The height of the side should be 4, and the length of the edge should be 5. Making that adjustment, the total area is 51.6 cm^2.

It is hard to tell what is intended. Not all answers are showing, so we can't "reverse-engineer" the problem from the answers.
7 0
3 years ago
Is (4, -2) the solution of the system of equations shown
Advocard [28]

No, because if you substitute (4, -2) into x and y in each equation, they are not the same as the value on the right side of the equation.

2(4) + 4(-2) = - 2

8 + -8 = -2

0 = -2 <---- this is not correct.

-4(4) + -2 = -14

-16 + -2 = -14

-18 = -14 <----- this is not correct.

8 0
3 years ago
There are exactly triangles when two sides measure 6 inches and the angles included by these two sides measure 90 degrees
Alla [95]

Answer:

Ok

Step-by-step explanation:

3 0
3 years ago
The Apple Watch was on sale for $474.60. Find the original price of the Apple Watch if it had been reduced by 30%
kondor19780726 [428]

Answer:616.98

Step-by-step explanation:

5 0
3 years ago
4.2(5.1x+6.8) Simplify the expression
vovikov84 [41]

Answer:

21.42x+28.56

Step-by-step explanation:

Expand: 4.2×5.1×x+4.2×6.8

4.2×5.1×x  to (21.42)x

Simplify: 21.42x+4.2×6.8

4.2×6.8 = 28.5628.56

21.42x+28.56

6 0
3 years ago
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