3 years ago

Will mark brain list

Mathematics

1 answer:

RSB [31]3 years ago

4 0

Answer:

Step-by-step explanation:

6+6=12 12+12=24 9+6=15 15+24=39

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An aquarium contained an equal number of horseshoe crabs and sea stars. After 15 horseshoe crabs were removed and 27 sea stars w

KATRIN_1 [288]

Answer:

45 horseshoe crabs and 45 sea stars

Step-by-step explanation:

The aquarium initially contained x crabs and x sea stars.

"After 15 horseshoe crabs and 27 sea stars are removed the ratio of horseshoe crabs to sea stars is 5:3"

(x-15):(x-27) = 5:3

(x-15)/(x-27) = 5/3

3(x-15) = 5(x-27)

3x-45 = 5x-135

90 = 2x

x = 45

5 0

3 years ago

Find the highest odd number that is a factor of 40 and a factor of 60.

Arte-miy333 [17]

Answer:

HCF (HIGHEST COMMON FACTOR) OR GCF ( GREATEST COMMON FACTOR) OF 40 AND 60 IS 20.

8 0

3 years ago

Transform the standard form equation into slope intercept form:15=10x-5y

arsen [322]

Answer:

10x - 5y = 15

-5y = -10x + 15

y = 2x - 3

Step-by-step explanation:

7 0

3 years ago

Kevin is 4 times as old as Daniel and is also 6 years older than Daniel

MAXImum [283]

Answer:

Part a) Daniel's age is 2 years

Part b) Kevin's age is 8 years

Step-by-step explanation:

The question is

Part a) How old is Daniel?

Part b) How old is Kevin?

Let

x ----> Kevin's age

y ----> Daniel's age

we know that

$x=4y$ -----> equation A

$x=y+6$ ----> equation B

Equate equation A and equation B

$4y=y+6$

solve for y

$4y-y=6$

$3y=6$

$y=2$

therefore

Daniel's age is 2 years

Find the value of x

substitute the value of y in any of the two equations

$x=4(2)=8\ years$

$x=2+6=8\ years$

therefore

Kevin's age is 8 years

6 0

3 years ago

Find the inverse of f(x)=7.50x

m_a_m_a [10]

there is no inverse though

8 0

2 years ago