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Oxana [17]
2 years ago
11

Which expressions can be used to compute the approximate area of triangle xyz? check all that appy

Mathematics
1 answer:
GenaCL600 [577]2 years ago
4 0

Answer:

The answer is 1st point, 1/2×22.0×23.1

Step-by-step explanation:

You can let XY be the base and XZ be the height of the triangle. Then, by using the formula of the area of triangle, A=1/2×base×height to find the expression.

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What is the solution of |-1 + x| = 5
nataly862011 [7]

Answer:

6, -4

Step-by-step explanation:

abs(-1+x)=5

-1+x=5 and -1+x=-5

-------------------------

-1+x=5

x=5-(-1)=5+1=6

-------------------

-1+x=-5

x=-5-(-1)=-5+1=-4

4 0
3 years ago
Please answer asap!!!!!
kherson [118]

Step-by-step explanation:

The equation of a circle can be the expanded form of

\large \text{$(x-a)^2+(y-b)^2=r^2$}(x−a)

2

+(y−b)

2

=r

2

where rr is the radius of the circle, (a,\ b)(a, b) is the center of the circle, and (x,\ y)(x, y) is a point on the circle.

Here, the equation of the circle is,

\begin{gathered}\begin{aligned}&x^2+y^2+10x-4y-20&=&\ \ 0\\ \\ \Longrightarrow\ \ &x^2+y^2+10x-4y+25+4-49&=&\ \ 0\\ \\ \Longrightarrow\ \ &x^2+y^2+10x-4y+25+4&=&\ \ 49\\ \\ \Longrightarrow\ \ &x^2+10x+25+y^2-4y+4&=&\ \ 49\\ \\ \Longrightarrow\ \ &(x+5)^2+(y-2)^2&=&\ \ 7^2\end{aligned}\end{gathered}

⟹

⟹

⟹

⟹

x

2

+y

2

+10x−4y−20

x

2

+y

2

+10x−4y+25+4−49

x

2

+y

2

+10x−4y+25+4

x

2

+10x+25+y

2

−4y+4

(x+5)

2

+(y−2)

2

=

=

=

=

=

0

0

49

49

7

2

From this, we get two things:

\begin{gathered}\begin{aligned}1.&\ \ \textsf{Center of the circle is $(-5,\ 2)$.}\\ \\ 2.&\ \ \textsf{Radius of the circle is $\bold{7}$ units. }\end{aligned}\end{gathered}

1.

2.

Center of the circle is (−5, 2).

Radius of the circle is 7 units.

Hence the radius is 7 units.

4 0
2 years ago
PLS HELP ME ASAP FOR 14? (SHOW WORK!!!!) + LOTS OF POINTS!!!
vladimir1956 [14]
30% off $ 45 

<span>30% of $ 45 = (.3) (45) = $ 13.50 </span>

<span>30% off $ 45 = $ 45.00 - $ 13.50 = $ 31.50
hope this helped:)

</span>
6 0
2 years ago
2. Choose the correct measurement of the paper clip to the nearest 1/8 inch.
Korolek [52]

Answer: 1 3/8 inches.

5 0
2 years ago
Read 2 more answers
What was the population in 2008?<br> Can someone explain this to me?
Bas_tet [7]

Answer:

UNITED STATES ITALY DEM. REP. CONGO

Population mid-2008 305 million 60 million 67 million

Population 2050 (projected) 438 million 62 million 189 million

Lifetime births per woman 2.1 1.3 6.5

Percent of population below age 15 20% 14% 47%

Percent of population ages 65+ 13% 20% 3%

Life expectancy at birth 78 years 81 years 53 years

Annual births 4.3 million 568,120 2.9 million

Annual deaths 2.4 million 575,300 0.8 million

Annual births minus deaths 1.9 million -7,200 2.1 million

Percent of population undernourished <2.5% <2.5% 74% hope this helps!

6 0
2 years ago
Read 2 more answers
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