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Phoenix [80]
3 years ago
11

A bag has 7 red marbles 8 blue marbles 5 purple marbles . Racheal draws a marble from the bag without looking

Mathematics
2 answers:
irina [24]3 years ago
7 0

Answer:

40

Step-by-step explanation:

Klio2033 [76]3 years ago
3 0

Answer:

Rachel most likely drew a red or blue marble.

8/20 chance of drawing a blue marble.

7/20 chance of drawing a red marble.

5/20 chance if drawing a purple marble.

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What is 70 percent of 1872
uranmaximum [27]

Answer:

1310.4

Step-by-step explanation:

1872 x 0.7 = 1310.4

4 0
3 years ago
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Do you have to multiply by 2 on circumference
OverLord2011 [107]
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3 0
3 years ago
PLS HELP AN OGRE OUT Marco has drawn a line to represent the perpendicular cross-section of the triangular prism. Is he correct?
Rzqust [24]

Answer:

The correct option is;

Yes, the line should be perpendicular to one of the rectangular faces

Step-by-step explanation:

A perpendicular cross-section of a triangular prism resting on a rectangular face will have a triangular cross-section section an either side of the line of the cross-section, therefore we have;

Given that the triangular prism is lying on one of the rectangular faces, the perpendicular cross-section will be represented by a line drawn along the slant height of the triangular prism, therefore the correct option is yes, the line should be perpendicular to one of the rectangular faces.

5 0
4 years ago
4<br>-5a+b=8<br>7a +9b = -32<br>I need to use substitution for this one. Help?​
Sauron [17]

Answer:

<h2>a = -2, b = -2 </h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}-5a+b=8&\text{add}\ 5a\ \text{to both sides}\\7a+9b=-32\end{array}\right\\\\\left\{\begin{array}{ccc}b=5a+8&(1)\\7a+9b=-32&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\7a+9(5a+8)=-32\qquad\text{use the distributive property}\\\\7a+(9)(5a)+(9)(8)=-32\\\\7a+45a+72=-32\qquad\text{subtract 72 from both sides}\\\\52a=-104\qquad\text{divide both sides by 52}\\\\\boxed{a=-2}\\\\\text{Put the value of}\ a\ \text{to (1):}\\\\b=5(-2)+8\\\\b=-10+8\\\\\boxed{b=-2}

8 0
3 years ago
What is the area of that shaded sector?
melomori [17]

Answer:

50.24

Step-by-step explanation:

1/4x3.14xr^2

r=16 because of the length

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so

1/4x3.14x16^2/4

=50.24

4 is our denominator because of the denominator on the fraction

4 0
3 years ago
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