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2 years ago

I need help with letter A

Mathematics

2 answers:

zhannawk [14.2K]2 years ago

3 0

Answer:

Step-by-step explanation:

the four smaller rectangles of each of the corners: 2*1=2. since there are four of them, 2*4=8

the middle, larger rectangle: (6-2-2)*(1+1+1) = 2*3 =6

add small and big rectangles: 8+6 = 14

Semmy [17]2 years ago

3 0

Answer:

Step-by-step explanation:

6*3-2(2*1)

=18-4=14

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If the function f is given by f(x)= 4x -3, find the value of f(2+h)

Travka [436]

f(x)=4x-3

$\\ \sf\longmapsto f(2+h)$

$\\ \sf\longmapsto 4(2+h)-3$

$\\ \sf\longmapsto 4h+8-3$

$\\ \sf\longmapsto 4h+5$

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2 years ago

Ms.Lopez has created a floor plan of a dollhouse. The area of the entire dollhouse is 576 square inches

harina [27]

Answer:

(a)Area of the bedroom=96 square inches

(b)Area of the living room =144 square inches

(c)Area of the dollhouse that is not of the bedroom or living room =336 square inches.

Step-by-step explanation:

The area of the bedroom is 1/6 the area of the entire dollhouse

The area of the living room is 3/2 times the area of the bedroom.

The area of the entire dollhouse is 576 square inches

Let the area of bedroom=b

Let the area of living room=l

(a) The area of the bedroom is 1/6 the area of the entire dollhouse

$b=\frac{1}{6}X576=96$ square inches

(b)The area, in square inches, of the living room

The area of the living room is 3/2 times the area of the bedroom

l= $\frac{3}{2}X96=144$ square inches

(c)The total area of the house =576 square inches

Area of the bedroom=96 square inches

Area of the living room =144 square inches

Area of the dollhouse that is not of the bedroom or living room

=576-(96+144)=576-240=336 square inches.

The area of the living room is 3/2 times the area of the bedroom

This is gotten by subtracting the area of the bedroom and living room from the total area of the house.

3 0

3 years ago

A chemistry teacher needs to mix a 20% salt solution with an 80% salt solution to make 20 qt of a 40% salt solution. How many qu

Svetlanka [38]

Answer:

6 2/3 qt 80%
13 1/3 qt 20%

Step-by-step explanation:

It is often convenient to solve a mixture problem by letting a variable represent the quantity of the higher-concentration contributor to the mix.

We can let x represent the number of quarts of 80% solution needed. Then (20-x) is the number of quarts of 20% solution needed. The amount of salt in the final mix is ...

0.80x +0.20(20-x) = 0.40(20)

0.60x = 0.20(20) . . . . . . . . subtract 0.20(20) and simplify

x = 20/3 = 6 2/3 . . . . . . . . . divide by 0.60; quarts of 80% solution

(20 -x) = 13 1/3 . . . . . . . . . . amount of 20% solution needed

The teacher should mix 6 2/3 quarts of 80% solution with 13 1/3 quarts of 20% solution.

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2 years ago

Let t[1..n] be a sorted array of distinct integers, some of which may be negative. give an algorithm that can find an index i su

lisabon 2012 [21]

Assuming we need to find i such that
1 ≤ i ≤ n and t[i]=i.

If we need to find only the first occurrence, we can do:

for i:1 to n {
if t[i]=i then return(i)
}

If exhaustive search is required, then put the results (values of i) in an array or a linked list, return the number of values found, and the array (or linked list).

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3 years ago

Two number differ by 3 The sum of their reciporcal is 7/10 find tge numbers

motikmotik

The numbers are 5 and 2.

Reciprocals: 5- 5/10
2- 2/10
(2/10)+(5/10)= 7/10
5-2= 3

Answer: 5 and 2

6 0

2 years ago

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