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4 years ago

The temperature dropped 24 degrees in 4 hours. Which integer represents the change per hour?

Mathematics

1 answer:

Lilit [14]4 years ago

7 0

Answer:

-6

Step-by-step explanation:

24/4 is 6 but the tempature decreased due to that we put a negative symbol in front.

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Find the area of a rhombus if its diagonals are of lengths 12.8 cm and 8.4cm

Daniel [21]

Area =

$\frac{pq}{2}$

where p and q are it's diagonal

so according to the rule.

$\frac{12.8 \times 8.4}{2}$

$\frac{107.52}{2}$

$53.76 \\ \\$

is the answer.

hope understands 

4 0

1 year ago

Dylan read his book for 2 2/3 hours and Faith read her's for 1 1/5.How much longer did did Dylan read then Faith?

Damm [24]

Answer:

1 7/15

Step-by-step explanation:

2-1=1

then you make 2/3 and 1/5 have the same denominator -

5*3=15

?/15 ?/15

multiply 2 by 5 which is 10, so 10/15

then multiply 1 by 3 which is 3/15

subtract 3/15 from 10/15 which is 7/15

4 0

4 years ago

What value of x makes the equation true? 16 + (18 + 10) = (x + 18) + 10 x = ?

choli [55]

Answer:

See below

Step-by-step explanation:

16 + (18 + 10) = (x + 18) + 10x

16 + 28 = (x + 18) + 10x Add like terms in the parentheses

44 = (x + 10x) + 18 Use the community property to regroup like

terms

44 = 11x + 18 Simply

-18 = -18 Substract 18 from both side

26 = 11x Simply

26 = 11x Divide by 11

11 11

$2\frac{4}{11} = x$ Reduce

3 0

2 years ago

Use the quadratic formula to find the solutions for.. y = 2x^2 - 9x + 5.

Yakvenalex [24]

Answer: $x=\frac{9}{4}-\frac{\sqrt{41} }{4} \\x=\frac{9}{4}+\frac{\sqrt{41} }{4}$

Step-by-step explanation:

$2x^2-9x+5$

a=2

b=-9

c=5

$x=\frac{-b\frac{+}{}\sqrt{b^2-4ac} }{2a}$

$x=\frac{-(-9)\frac{+}{}\sqrt{(-9)^2-4(2)(5)} }{2(2)}$

$x=\frac{9\frac{+}{}\sqrt{81-40} }{4}$

$x=\frac{9\frac{+}{}\sqrt{41} }{4}$

$x=\frac{9}{4}-\frac{\sqrt{41} }{4} \\x=\frac{9}{4}+\frac{\sqrt{41} }{4}$

4 0

3 years ago

Subtract the following polynomials. Write answer in a-b-c-d order. From 4a+7b-12c subtract 8a-9b+12d

ozzi

$(4a+7b-12c)-(8a-9b+12d)\\4a+7b-12c-8a+9b-12d$

Negative multiply negative = Positive

Negative multiply positive = negative

$-8a+4a+9b+7b-12c-12d\\-4a+16b-12c-12d$

Thus the answer is -4a + 16b - 12c - 12d.

4 0

3 years ago