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aliina [53]
2 years ago
15

A bake sale has 3 cakes for sale. Each cake was cut into 10 slices. Each slice was sold for $10. How much money did the bake sal

e make for selling all of the cakes?
Mathematics
2 answers:
irinina [24]2 years ago
8 0

Answer:

300$

Step-by-step explanation:

you have 3 cakes

in each cake 10 slices each for 10$

so for one cake 10x10=100

for all 3 cakes 3x100=300$

dimulka [17.4K]2 years ago
4 0

Answer:

$300

Step-by-step explanation:

3 x 10 = 30

30 x 10 = 300

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The following data represent the discrete probability distribution for the number of stars that reviewers have a first edition s
Shkiper50 [21]

Answer:

Step-by-step explanation:

given that the following data represent the discrete probability distribution for the number of stars that reviewers have a first edition statistics reference book.

Stars            5    4      3         2    1

Probability 25% 35% 20% 10% 10%

H0: Second edition is as per the above probabilities

Ha: atleast one is different from the above probability

(two tailed chi square test)

Alpha = 0.025

Assuming H0 to be true we calculate expected frequencies for total 80

chi square calculatons are shown below

df = 4

                  5     4         3 2 1      Total

Observed 28    28 13 6 5      80

Expected 20    28 16 8 8      80

chi square        

(O_E)^2/E 3.2 0 0.5625 0.5 1.125 5.3875

p value =0.1455

Since p value >0.025, we accept H0

The expected requency of three-star reviews is ________.16

3 0
3 years ago
If 2(a^2+b^2)=(a+b)^2 then, <br> &gt;a+b=0,<br> &gt;ab=0,<br> &gt;a=b,<br> &gt;2a=b
Tasya [4]

Answer:

2·(a^2 + b^2) = (a + b)^2

2·a^2 + 2·b^2 = a^2 + 2·a·b + b^2

a^2 + b^2 = 2·a·b

a^2 - 2·a·b + b^2  = 0

(a - b)^2 = 0

a = b


7 0
3 years ago
To the Pythagorean Theorem
Aloiza [94]

Answer:

x = 29

Step-by-step explanation:

c^{2} = a^{2} + b^{2}

c^{2} = 20^{2} + 21^{2}

c^{2} = 400 + 441

c^{2} = 841

\sqrt{c^2} = \sqrt{841}

c = 29

4 0
2 years ago
Four resistors are connected in series such that their total resistance is 50ohm . If the resistance of resistors is 5 ohm , 10o
Katyanochek1 [597]
<h2>Answer:</h2>

\boxed{R_{4}=20\Omega}

<h2>Step-by-step explanation:</h2>

If resistors are in series, so the current  I is the same in all of them. In this problem we have four resistors. So, we can get a relationship between the Equivalent resistance  of series combination and the four resistors as follows:

R_{eq}=R_{1}+R_{2}+R_{3}+R_{4}

R_{eq} is the total resistance 50\Omega. Moreover:

R_{1}=5\Omega \\ R_{2}=10\Omega \\ R_{3}=15\Omega

Therefore:

50=5+10+15+R_{4} \\ \\ R_{4}=50-(5+10+15) \\ \\ R_{4}=50-30 \\ \\ \boxed{R_{4}=20\Omega}

7 0
3 years ago
Kyra see a pair of boots that costs $60.00.They are on salenfor 25% off.She also has a coupon for an additional 10% off.How much
nikitadnepr [17]
It's 40.5
60 \times .25 \\ 45 \times .10
4 0
3 years ago
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