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3 years ago

Can I pls get a little help ill mark brailiest

Mathematics

2 answers:

Aleks [24]3 years ago

8 0

Answer:

9/8

Step-by-step explanation:

-3/4 ÷ -8/12

Use keep, change, flip

KEEP the first fraction: -3/4 ÷ -8/12

CHANGE the division to multiplication: -3/4 × -8/12

FLIP the denominator and numerator of the second fraction: -3/4 × -12/8

Then cross multiply: -3 × -12 = 36, 4 × 8 = 32

This results in 36/32. Now you simplify from here:

36/32 = 9/8 OR 18/16 OR 27/24 OR 36/32

Let me know if I did something wrong.

BaLLatris [955]3 years ago

7 0

Answer:

3 * ( (- $\frac{1}{4}$ )) ÷ (- $\frac{8}{4}$ ))

Step-by-step explanation:

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Find the error in the following sample of work, if one exists.

ch4aika [34]

Answer:

D. There is no mistake.

Step-by-step explanation:

The following lines show the process of factorization by using common factor.

Line 1:

In line 1, the equation is given and is completely fine.

$y^{2}+8xy+2y+16x=0$

The only thing missing was equate to zero, but the options below talk about correct factors only, therefore this can't be considered as a mistake and can be ignored completely.

Line 2:

In line 2, the terms are grouped, from which we can factor out common terms.

$(y^{2}+8xy)+(2y+16x)=0$

This is also fine.

Line 3:

In line 3, the common term y is taken out from group 1 and 2 from other group.

$y(y+8x)+2(y+8x)=0$

which is exactly what is given in line 3.

Line 4:

In line 4 the common factors can be seen and easily split into 2 factors.

$(y+2)(y+8x)=0$

which is exactly what is given in line 4.

Options:

A. The grouping is correct in line 2. So this option is does not hold.

B. Common factor was factored correctly from group 1. So this option does not hold.

C. Common factor was factored correctly from group 2. So this option does not hold.

D. There is no mistake. This is correct. Thus we choose this option as correct answer.

3 0

3 years ago

Create the equation of a parabola using the function h(t) = -16t2 + h0 where h(t) is the height (in feet) of an object thrown fr

butalik [34]

H(t)=-16t²+500
0=-16t²+500
16t²=500
t²=31.25
t=5.9 seconds before the object hits the ground
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7 0

3 years ago

Giving BRAINLIEST to correct answer

sergiy2304 [10]

Answer:

Step-by-step explanation:

There are 13 scores in total,the Middle score is the median score.

3 0

3 years ago

Read 2 more answers

Juanita usually spends $3 more than twice her transportation costs on groceries. if x is the amount she spends on transportation

ruslelena [56]

<h3>Answer: It's a linear equation.</h3><h3>It's not a proportional relationship.</h3><h3>Juanita spend $63 on groceries if she spent $30 on transportation.</h3>

Step-by-step explanation: Given equation y=2x+3.

Where x is the amount she spends on transportation, and y is the amount she spends on groceries.

We can see that given equation is in slope-intercept form y=mx+b.

So, it's a linear equation and y=2x+3 is the relationship between x and y linear.

Also, a linear linear equation represents a proportion relationship if y-intercept is 0.

But for the given equation y=2x+3, y-intercept is 3.

Therefore, it's not a proportional relationship.

Now, in order to find how much would Juanita spend on groceries if she spent $30 on transportation, we need to plug x= 30 in given equation.

Therefore,

y = 2(30) +3 = 60+3 = 63.

<h3>So, Juanita spend $63 on groceries if she spent $30 on transportation.</h3>

7 0

3 years ago

Pleaseee helpppp:)))

matrenka [14]

Answer:

<h2>Option B:</h2><h3>112 families </h3>

Step-by-step explanation:

Given,

No. of families = 75

Out of 75 no. of families had cars = 42

Out of 1, no. of families can have cars

$= \frac{42}{75}$

Therefore, 

Out of 200 families, no. of families had cars

$= 200 \times \frac{42}{75}$

$=200 \times \frac{14}{25}$

= 8 × 14

= 112

Hence, 

option B is correct as 112 families have cars out of 200 families (Ans)

5 0

2 years ago