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3 years ago

12.

Mathematics

2 answers:

max2010maxim [7]3 years ago

8 0

Answer:

D)7

Step-by-step explanation:

2 - (-8) + (-3) =

10-3 =7

Sveta_85 [38]3 years ago

7 0

Answer:

The answer is d because 10-3 is 7

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What is -five sixths time six fifths

s2008m [1.1K]

Answer:

-five sixths= -5/6

six fifths= 6/5

times= multiplication

so , -5/6 x 6/5 = -1

(both sixes get cancelled and the fives also get cancelled to get -1/1 = -1)

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3 years ago

What would the y-intercept be Ill Give brainly no bots pls

kow [346]

Answer:

1,000

Step-by-step explanation:

the line starts at (0,1000) on the y axis

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2 years ago

The sum of three numbers is 8. The third is 9

Ierofanga [76]

Answer:

→ First value is 1

→ Second value is 2

→ Third value is 5

Step-by-step explanation:

• let numbers be x, y and z

${ \tt{z = 8y - 9 - - - (eqn \: 1)}} \\ \\ { \tt{10x = 8y - 7 - - - (eqn \: 2)}} \\ \\ { \tt{x + y + z = 8 - - - (eqn \: 3)}}$

• from eqn 2, make x the subject:

${ \tt{x = \frac{8y - 7}{10} }} \\$

• substitute all variables in eqn 3:

${ \tt{ \frac{8y - 7}{10} + y + 8y - 9 = 8}} \\ \\ { \tt{8y - 7 + 10y + 80y - 90 = 80}} \\ \\ { \tt{98y = 177}} \\ \\ { \boxed{ \tt{ \: y = 1.8}}}$

• find z

${ \tt{z = 8y - 9}} \\ \\ { \tt{z = 8(1.8) - 9}} \\ \\ { \tt{z = 14.4 - 9}} \\ \\ { \boxed{ \tt{ \: z = 5.4 \: }}}$

• find x:

${ \tt{x = \frac{8(1.8) - 7}{10} }} \\ \\ { \tt{x = \frac{7.4}{10} }} \\ \\ { \boxed{ \tt{ \: x = 0.74 \: }}}$

Rounding to nearest value:

${ \boxed{ \rm{x = 1}}} \\ { \boxed{ \rm{y =2 }}} \\ { \boxed{ \rm{z = 5}}}$

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2 years ago

You are visiting a rainforest, but unfortunately,your insect repellent has run out. As a result, at each second, a mosquito land

zmey [24]

Answer:

Step-by-step explanation:

Prob at each second, a mosquito lands on your neck =0.5

Prob it bites/it lands = 0.2

Prob it does not bite/it lands = 0.8

Hence in one second prob for getting a bite = $0.5(0.2) = 0.01$

i.e. 1/100 chance of getting bitten in one second

In 100 seconds number of bites $=1$

Expected time between successive bites = 100

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3 years ago

Franklin Construction Company build a sidewalk around two sides of a new library, as shown in the figure. what is the area of th

PtichkaEL [24]

Answer:

$630.36\ ft^2$

Step-by-step explanation:

we know that

To find out the area of the sidewalk, multiply the length by the width of the sidewalk

The width of the sidewalk is equal to

$113.4\ ft-110\ ft=3.4\ ft$

$75.4\ ft-72\ ft=3.4\ ft$

The area is equal to

$113.4(3.4)+72(3.4)\\385.56+244.8\\630.36\ ft^2$

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3 years ago