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Jet001 [13]
3 years ago
9

4 times 21 in expanded form

Mathematics
2 answers:
satela [25.4K]3 years ago
7 0
80+4 is the answer to your problem
kkurt [141]3 years ago
6 0
The answer to your problem is 80+4
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the triangles below are congruent and their corresponding parts are marked. name all the corresponding congruent angles and side
GuDViN [60]

Answer:

See explanation

Step-by-step explanation:

The triangles below are congruent and their corresponding parts are marked.

a) Angles marked with one arc are congruent, so \angle B\cong \angle Z.

Angles marked with two arcs are congruent, so \angle A\cong \angle Y.

Angles marked with three arcs are congruent, so \angle C\cong \angle X.

b) Sides marked with one segment are congruent, so \overline {AC}\cong \overline {YX}.

Sides marked with two segments are congruent, so \overline {BC}\cong \overline {ZX}.

Sides marked with three segments are congruent, so \overline {AB}\cong \overline {YZ}.

c) Name teo congruent triangle following the congruence of angles:

\triangle BCA\cong \triangle ZXY

6 0
4 years ago
Calculate the surface area of the composite figure
zhannawk [14.2K]

Answer:

Below in bold.

Step-by-step explanation:

Total surface area = 1/2 * area of a sphere + area of the side o a cone

=  1/2 * 4 π r^2 + π r L

= 1/2 * 4 π 7^2 + π*7*25

=  307.876 + 549.779

= 857.65 in^2 to nearest hundredth.

8 0
2 years ago
Witch is a equation is equivalent to 3[x+3(4x - 5)]
hodyreva [135]

3( x+ 3(4x-5))

3x + 9(4x-5)

3x + 36x - 45

39x - 45 is equivalent to 3( x+ 3(4x-5))

8 0
2 years ago
Q5: Identify the graph of the equation and write an equation of the translated or rotated graph in general form.
MAVERICK [17]

Answer:

d.\:ellipse;\:3x^2+y^2+6x-6y+3=0.

Step-by-step explanation:

The given conic has equation;

3x^2+y^2=9

Divide through by 9.

\Rightarrow \frac{3x^2}{9}+\frac{y^2}{9}=\frac{9}{9}

\Rightarrow \frac{x^2}{3}+\frac{y^2}{9}=1.

This is an ellipse centered at the origin;

This ellipse has been translated so that the center is now at;

(-1,3)

The translated ellipse has equation;

\frac{(x+1)^2}{3}+\frac{(y-3)^2}{9}=1.

Clear the fraction;

3(x+1)^2+(y-3)^2=9.

Expand;

3(x^2+2x+1)+(y^2-6y+9)=9.

3x^2+6x+3+y^2-6y+9=9.

Write in general form;

3x^2+y^2+6x-6y+9-9+3=0.

3x^2+y^2+6x-6y+3=0.

The correct choice is D

4 0
3 years ago
Read 2 more answers
What is the length of BC in the right triangle below?
telo118 [61]

Answer:

The answer should be 15

Step-by-step explanation:

5 0
3 years ago
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