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defon
2 years ago
6

rectangle abcd is similar to rectangle pqrs. given ab=14 cm, BC=8cm and pq=21cm, calculate the length of QR

Mathematics
1 answer:
weqwewe [10]2 years ago
6 0
QR =12 because you set up a proportion 21/14=x/8 then cross multiply and get 14x=168 then you divide and get 12
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Folosind procedeul mersului invers afla pentru can numarul stiind ca: a) daca la acel numar aduni 1345 apoi scazi 155 obtii numa
earnstyle [38]
Yeah I think so you have to solve and break it down
7 0
2 years ago
Is (5,4) a solution of the system of linear equations?
TEA [102]

Answer:

Yes

Step-by-step explanation:

If you have any questions about the way I solved it,don't hesitate to ask

Glad to help

4 0
2 years ago
What is the product of 5.86 × 10–7 and 3.1 × 104 1. Write the expression: (5.86 × 10–7)(3.1 × 104) 2. Rearrange the expression:
Reil [10]

Answer:

The value of the exponent of the base 10 for this product is -2.

Step-by-step explanation:

5.86\,\,10^{-7}\,\,*\,\,3.1\,\,10^4=18.166\,\,10^{-7+4}=18.166\,\,10^{-3}

Now, in order to represent this number in scientific notation, we need to reduce the coefficient 18.166 to a coefficient larger or equal to 1 and smaller strictly than 10, by using division or multiplications by powers of 10. In order to reduce it to 1.8166, we need to divide the original 18.166 by ten so we do the following in order not to change the given number (multiply and divide by ten at the same time):

\frac{18.166\,\,10}{10} \,10^{-3}=1.8166\,*\,10\,*\,10^{-3}=1.8166\,\,10^{-2}

3 0
2 years ago
Read 2 more answers
Last year at a certain high school, there were 110 boys on the honor roll and 75 girls on the honor roll. This year, the number
stiv31 [10]

Answer:

13.5%

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Which graph represents a line with a slope of and a y-intercept equal to that of the line y = 2/3 x – 2?
qwelly [4]
The graph would have to look like the attachment I attached to this comment. If you can't see it then the graph will go through the y-intercept of -2 and the x-intercept of 3. 

Explanation: Already we can tell that the line will go through -2 as the y-intercept. So we have to take the slope and apply it to the -2. The slope is in rise over run form. We rise 2 times. And then go to the right 3 times. We can do the same but backwards. Go down 2 times. and then go left 3 times. Do it twice in both ways and you have your line. 

7 0
2 years ago
Read 2 more answers
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