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Mademuasel [1]
2 years ago
14

1 point Juan got 1603 as the sum of 80.1 and 802. Where did he make his mistake? *

Mathematics
1 answer:
Brums [2.3K]2 years ago
6 0

Answer:

882.1

Step-by-step explanation:

The Sum means addition if he got this answer he most likely multiplied those two numbers because he thought of multiplication Sum is just purely addition nothing else

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2(4x+3)=7x+5<br><br> (SHOW WORK)<br><br><br><br><br> REPOST
coldgirl [10]

Answer: the answer is -1

Step-by-step explanation:

8 0
2 years ago
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Dawn and abed each roll a standard die obtaining a random number from 1 to 6. if the probability that dawns number is larger tha
larisa [96]

Answer:

a+b = 12

Step-by-step explanation:

There are 36 possible outcomes for rolling two dice. Let A be the number rolled by Abed and D be the number rolled by Dawn. The sample space, in the format [A,D], of all of the possibilities in which Dawn's number is larger is:

[5,6]

[4,5] [4,6]

[3.4] [3,5] [3.6]

[2,3] [2.4] [2,5] [2.6]

[1,2] [1,3] [1.4] [1,5] [1.6]

There are 15 ways out of 36 possible ways of Dawn getting the higher number. In the simplest form:

\frac{15}{36}=\frac{5}{12}=\frac{a}{b}\\ a+b = 5+12 = 17

7 0
3 years ago
If cos(x) = Three-fourths and tan(x) &lt; 0, what is cos(2x)?
makvit [3.9K]

Step-by-step explanation:

The value of sin(2x) is \sin(2x) = - \frac{\sqrt{15}}{8}sin(2x)=−

8

15

How to determine the value of sin(2x)

The cosine ratio is given as:

\cos(x) = -\frac 14cos(x)=−

4

1

Calculate sine(x) using the following identity equation

\sin^2(x) + \cos^2(x) = 1sin

2

(x)+cos

2

(x)=1

So we have:

\sin^2(x) + (1/4)^2 = 1sin

2

(x)+(1/4)

2

=1

\sin^2(x) + 1/16= 1sin

2

(x)+1/16=1

Subtract 1/16 from both sides

\sin^2(x) = 15/16sin

2

(x)=15/16

Take the square root of both sides

\sin(x) = \pm \sqrt{15/16

Given that

tan(x) < 0

It means that:

sin(x) < 0

So, we have:

\sin(x) = -\sqrt{15/16

Simplify

\sin(x) = \sqrt{15}/4sin(x)=

15

/4

sin(2x) is then calculated as:

\sin(2x) = 2\sin(x)\cos(x)sin(2x)=2sin(x)cos(x)

So, we have:

\sin(2x) = -2 * \frac{\sqrt{15}}{4} * \frac 14sin(2x)=−2∗

4

15

∗

4

1

This gives

\sin(2x) = - \frac{\sqrt{15}}{8}sin(2x)=−

8

15

6 0
2 years ago
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40 POINTS NEED HELP ASAP
sesenic [268]
Use slope formula: y2-y1/x2-x1

XZ: -5/9
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XYZ is a right triangle because two of these slopes have a product of -1.

(YZ and XY does).  We are all busy these days.
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2 years ago
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Suppose a college student pays $500 for tuition fees. However, she also has to pay $250 for her textbooks (ouch!). What percent
Dominik [7]
750 dollars in total <=500+250=750
250/750=1/3 or 33.33333333% 
7 0
3 years ago
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