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3 years ago

Hi need help please hello

Mathematics

1 answer:

Elena L [17]3 years ago

5 0

Without actual numbers, it's impossible to tell for sure. However, it looks like a blue tiny square has been removed to be placed on the outside of figure B. If this is the case, then we can move that square back into place to get the same overall large square.

In short, figure A and figure B have the same blue shaded area. All figure B appears to do is move things around.

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Please help me with these 5 problems!!!

zalisa [80]

1. let the score on 1st test be = x

Given average is = 92

2nd tests scores are = 97 (assume this as y)

3rd test score = 89 (assume this as z)

Average = $\frac{x+y+z}{3}$

$92=\frac{x+97+89}{3}$

$276=186+x$

$x=90$

Hence, 1st day score was 90.

2. Let the original recipe made x cookies

As given she doubled her recipe so 2x cookies

Her brothers ate 8 cookies, this gives 2x-8 cookies left

She gave 2 dozen or 24 cookies to the neighbor and left with 12 cookies, it becomes $2x-8-24=12$

This gives $2x=44$

or $x=22$

Hence 1 recipe makes 22 cookies.

3. As given in the table,

Time used in total by boys = 255 minutes

Time used by girls in total = 213 minutes

Time used for school work by boys = 33 minutes

Time used by boys other than schoolwork = 255-33 = 222 minutes

Time used for school work by girls = 72 minutes

Time used by girls other than schoolwork = 213-72 = 141 minutes

How many more minutes per week do boys spend using the internet for purposes other than schoolwork then girls = 222-141 = 81 minutes

Hence, boys use 81 more minutes than girls for work other than schoolwork.

4. Total amount by two films = $775 million

Let x be the receipts of the second highest box office film.

Let x + 97 be the receipts of the highest one.

Equation becomes $x+x+97=775$

$2x+97=775$

$2x=678$

$x=339$

Hence highest receipt movie brought in $339+97=436$

The film with highest receipts bought in $436 million.

5. Vice President elected in the year = 1944

Died in the year = 1972

Total time in between = $1972-1944=28$ years

Age at the time of death = 88

So, he was elected 28 years back and that time his age was = $88-28=60$

He was elected at the age of 60 years.

6 0

3 years ago

Help please don’t use me for points

zepelin [54]

Answer:

2(4x+y)

Step-by-step explanation:

3x+4y+5x-2y first collect the like terms to get 8x+4y-2y

then factor out 2 from the expression to get your answer which is 2(4x+y)

hope this helps

8 0

3 years ago

Read 2 more answers

5x + 2 = x – 10 help

olga2289 [7]

Answer:-3/4

Step-by-step explanation:

5x+2=x-1

5x-x=-1-2

4x=-3

X=-3/4

4 0

3 years ago

Which of the following options best describes the zeros of the quadratic function above?

julia-pushkina [17]

.................................

6 0

3 years ago

Find the missing angle measures in the kite

BigorU [14]

Answer:

ok so we know that a triangle is 180 degrees.

so i can take the info and figure out the f,g,d,i all equal 90 degrees so i can figure out that 90+51=141

180-141=39

so angle a is 39

the two bigger triangles are equal and the two smaller ones are equal...

so we know that

a=39

b=62

c=51

d=90

e=39

f=90

g=90

h=28

i=90

Step-by-step explanation:

3 0

3 years ago