Solve for t. You must write your answer in fully simplified form. -19 = 7t

Mathematics

2 answers:

Kisachek [45]3 years ago

8 0

Answer:

$-7\frac{5}{7}$

Step-by-step explanation:

Divide 7 on both sides to get rid of the 7 that is combined with the t.

$\frac{7t}{7}=\frac{-19}{7}$

$t=-\frac{19}{7}$

7 x 2=14

19-14=5

$-7\frac{5}{7}$

________________________________________________

-20=11n

Divide -20 and 11.

But since you cannot, you turn it to a mixed fraction.

$-1\frac{9}{11}$

a_sh-v [17]3 years ago

6 0

Answer:

-2.71

Step-by-step explanation:

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3 years ago

Find the value of a. A. 58 B. 130 C. 86 D. 65

tatiyna

Answer:

$C. \ \ \ 86$ °

Step-by-step explanation:

1. Approach

In order to solve this problem, one must first find a relationship between arc (a) and arc (c). This can be done using the congruent arcs cut congruent segments theorem. After doing so, one can then use the secants interior angle to find the precise measurement of arc (a).

2. Arc (a) and arc (c)

A secant is a line or line segment that intersects a circle in two places. The congruent segments cut congruent arcs theorem states that when two secants are congruent, meaning the part of the secant that is within the circle is congruent to another part of a secant that is within that same circle, the arcs surrounding the congruent secants are congruent. Applying this theorem to the given situation, one can state the following:

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$86=\frac{a+c}{2}$