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3 years ago

Seven fewer than a number

Mathematics

2 answers:

attashe74 [19]3 years ago

3 0

Seven fewer than a number is n-7

Pavel [41]3 years ago

3 0

Seven fewer than a number 14

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What times -1/2 x what = -20?

Radda [10]

Answer:

Step-by-step explanation:

Let the number be y

-1/2 × y = -20

y = -20 ÷ -1/2

y = 20 × 2

y = 40

6 0

2 years ago

sam goes to the store to buy some fruit for his family. he buys 3 pounds of oranges and 5 pounds of apples. how many total ounce

galben [10]

8 Pounds = 128 Ounces

4 0

3 years ago

Five years ago, Victor was twice as old as his daughter Anika. In 10 years, the sum of their ages will equal 90. Find their ages

frozen [14]

Answer: 45 and 25

Step-by-step explanation:

Given

Five years ago victor was twice as old as his daughter

Suppose the current age of victor and his daughter are x and y

For five years ago

$\Rightarrow (y-5)=2(x-5)\\\Rightarrow y-5=2x-10\\\Rightarrow y=2x-5\\\Rightarrow 2x-y=5\quad \ldots(i)$

In 10 years sum of their ages is 90

$\Rightarrow (y+10)+(x+10)=90\\\Rightarrow x+y=70\quad \ldots(ii)$

On solving (i) and (ii) we get

$\Rightarrow x=25,y=45$

So, the current age of victor is 45 and his daughter is 25

8 0

2 years ago

20 points help pls show work

Delvig [45]

Answer: r≤10.4

Step-by-step explanation:

Initial depth - 12.8 feet

Maximum depth reached - 49.2 feet

49.2-12.8= 36.4 feet (maximum descent that the scuba diver can make)

Rate = Distance ÷ time

Distance - 36.4 feet

Time - 3.5 minutes

r= $\frac{36.4}{3.5}$

r= 10.4

As r is the maxmimum rate found, r cannot be greater than 10.4, so r must be less than or equal to 10.4.

Therefore, r≤10.4

4 0

2 years ago

1) Find (10) in the sequence given by b(n) = -5+9(n - 1).<br> b(10) =

S_A_V [24]

Answer:

b(10) = 76

Step-by-step explanation:

To find b(10) substitute n = 10 into the formula

b(10) = - 5 + 9(10 - 1) = - 5 + 9(9) = - 5 + 81 = 76

8 0

3 years ago