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2 years ago

9. Solve for x: Please explain

Mathematics

2 answers:

aleksklad [387]2 years ago

8 0

Answer:

since the triangle has a line on 2 sides, it means that it is equal. Also, every triangle has 180 degrees so the missing degree is 70

Step-by-step explanation:

Figured it out

IrinaK [193]2 years ago

6 0

Answer:

x = 70°

Step-by-step explanation:

Since 2 sides are marked as congruent then the triangle is isosceles with 2 base angles being congruent , both 55°

the sum of the 3 angles in the triangle = 180° , so

x + 55° + 55° = 180°

x + 110° = 180° ( subtract 110° from both sides )

x = 70°

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here are the first five terms of a quadratic sequence (1 8, 21, 40, 65). the nth term of this sequence can be written in the for

bazaltina [42]

Answer:

a=3 and b=-2

Step-by-step explanation:

We are given that five terms of a quadratic sequence are

1 8, 21, 40, 65.

The nth term of this sequence

= $an^2+bn$

We have to find the value of a and b where a and b are integers.

For n=1

$a+b=1$ ......(1)

For n=2

$(2)^2a+2b=8$

$4a+2b=8$

$2a+b=4$ .....(2)

Subtract equation (1) from (2) we get

$2a-a=4-1=3$

$a=3$

Using the value of a=3 in equation (1)

$3+b=1$

$b=1-3=-2$

Hence, the value of

a=3 and b=-2

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3 years ago

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adell [148]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the equation of this line in standard form? (-4, -1) & (1/2, 3)

BabaBlast [244]

bearing in mind that standard form for a linear equation means

• all coefficients must be integers, no fractions

• only the constant on the right-hand-side

• all variables on the left-hand-side, sorted

• "x" must not have a negative coefficient

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