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2 years ago

Need to do this Help please

Mathematics

2 answers:

lana66690 [7]2 years ago

7 0

Answer:

Step-by-step explanation:

Now e have two figures

1 is ABCD and other is APQD ,

Now to find g and f,

Now the are both figure is ,

Area = length * width

Area ABCD = 39 cm^2

AB* BC = 39

(g+7) * ( f) = 39

Again,

Area APQD = AP*QD= 16 cm ^2

(g)*(f)=16

from here f =16/g putt it in above equation we get ,

(g+7)*16/g = 39

16*g-39*g+96 =0

-23g +96 = 0

g = 96/23

g =3 cm

Now for f putt in one of the above equation ,

f =16/3

f =5.33 cm

Strike441 [17]2 years ago

3 0

Answer:

f = 3cm g = 6cm

Step-by-step explanation: to find f

Subtract the area of APQD from ABCD then divide by 7

f = (39 - 18)/7

f = 21/7

f = 3

To find g, divide the area of APQD by 3

18/3 = 6

We can do this because of the givens: ABCD is a rectangle, PQ is parallel to AD, so BC=AD=PQ

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If there are 420 students surveyed, which equation can be used to find the number of students s who prefer rap? Pop: 5/8 Jazz: 1

Aleksandr [31]

Answer:

B. $s=\dfrac{1}{4}\times420$

Step-by-step explanation:

Total number of students surveyed = 420

Of which only $\dfrac{1}{4}$ prefer rap.

So, the number of people who like rap is the product of the fraction of people who prefer rap and the total number of students.

$\text{Number of students who prefer rap}=s=\dfrac{1}{4}\times420\\\Rightarrow s=105$

The number of students that prefer rap is 105

So the equation is $s=\dfrac{1}{4}\times420$ .

3 0

2 years ago

Y'all - please help I have been on this question for like 20 mins

AURORKA [14]

Answer:

Step-by-step explanation:

5 0

3 years ago

−14 + 6x + 7 − 2x = 1 + 5x please answer this problem with work

maksim [4K]

Let's solve your equation step-by-step.− 14 + 6x + 7 − 2x = 1 + 5x
Step 1: Simplify both sides of the equation.−14 + 6x + 7 − 2x = 1 + 5x
Simplify: 4x - 7 = 5x + 14x − 7= 5x + 1
Step 2: Subtract 5x from both sides.4x − 7 − 5x = 5x + 1 − 5x− x − 7 =1 
Step 3: Add 7 to both sides.−x − 7 + 7= 1+7−x=8
Step 4: Divide both sides by -1.‌−x/−1 ‌=‌ 8/−1‌x= −8
Answer:x= −8
hope this helps :)

6 0

3 years ago

The perimeter of a triangle is not greater than 12 and the lengths of sides are natural numbers.

weqwewe [10]

Answer:

3 triangles

Step-by-step explanation:

Perimeter of triangle = a + b + c

Given that :

P = 12

and a, b, c are natural numbers

Let :

Side A = a

Side B = b

Side C = 12 - (a + b)

Side A + side B > side C - - - (condition 1)

a + b > 12 - (a + b)

a + b > 12 - a - b

a + a + b + b > 12

2a + 2b > 12

2(a + b) > 12

a + b > 6

Side A - side B < side C

a - b < 12 - (a + b)

a - b + a + b < 12

2a < 12

a < 6

b < 6 (arbitrary point)

Going by the Constraint above :

The only three possibilities are :

(2, 5, 5)

(3, 4, 5)

(4, 4, 4)

Total number of triangle = 3

Equilateral triangle (all 3 sides equal) = (4, 4, 4) = 1

Isosceles triangle (only 2 sides equal) = (2, 5, 5) = 1

3 0

2 years ago

Lebo buys blank writable CDs in bulk. He repackages them and sells them

Kay [80]

Answer:

He must sell each CD for R1,10 to make 40% profit

Step-by-step explanation:

R40×5%=2

R40-2=R38

40%×38=R15,2

15,2+40=55,2

55,2÷50=R1,10

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5 0

3 years ago