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Amiraneli [1.4K]
3 years ago
8

Sam have 10 books and Mary have 10 books too how manny books they all have

Mathematics
2 answers:
andreev551 [17]3 years ago
8 0
Sam and Mary have 20 books.
Liula [17]3 years ago
6 0
20 is the answer because 10+10=20
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What is the sum of the interior angles in this shape?
Dmitrij [34]

Answer:

720° :)

Step-by-step explanation:

You can find the total interior angle for any shape using the following (n being the number of sides):

S = ( n - 2 ) × 180 °

S = (6-2) * 180

S = 720

5 0
3 years ago
Read 2 more answers
Plot point C(2,7). If M is the midpoint of CD , what are the coordinates of D?
Y_Kistochka [10]

Answer:

The coordinates of D is (-4,-9)

Step-by-step explanation:

Given

C = (2,7)

<em>M=(-1,-1)  ----- Missing part of question</em>

Required

Determine the coordinates of D

<em>Let the coordinates of D be (x₂,y₂)</em>

<em>We'll solve this question using mid point formula;</em>

<em></em>M(x,y) = (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})<em></em>

<em>Where</em>

C(x_1,y_1) = (2,7)    and     M(x,y) = (-1,-1)

Put these values in the formula

(-1,-1) = (\frac{2+x_2}{2},\frac{7+y_2}{2})

By comparison;

-1 = \frac{2+x_2}{2}  and -1 = \frac{7+y_2}{2}

-1 = \frac{2+x_2}{2}

Multiply both sides by 2

-2 = 2 + x_2

Subtract 2 from both sides

-2 -2 = x_2

x_2 = -4

-1 = \frac{7+y_2}{2}

Multiply both sides by 2

-2 = 7 + y_2

Subtract 7 from both sides

-2 - 7 = y_2

y_2 = -9

<em>Hence, the coordinates of D is (-4,-9)</em>

4 0
3 years ago
Repost* Can someone plz help? :(
masha68 [24]

Answer:

2.5

Step-by-step explanation:

4*2.5= 10

8* 2.5=20

how i got 2.5 is by doing 10 divided by 4

5 0
2 years ago
Read 2 more answers
How often does always never sometimes
Vanyuwa [196]

1) sometimes

2) always

3) always

8 0
2 years ago
A rectangular lot is 145 yards long and 100 yards wide.
mr_godi [17]

Answer:

150 by 100

Step-by-step explanation:

5 0
2 years ago
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