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3 years ago

The question is in the picture. will give brainilist.

Mathematics

1 answer:

Nuetrik [128]3 years ago

3 0

Answer:

y=2/5x-15

Step-by-step explanation:

y-y=m(x-x¹)

y-(-11)=2/5(x-10)

y+11=2/5x-4

-11 -11

y=2/5x-15

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HELPPPPPPPPPPPPPPPPPP IM DESPERATE

Cerrena [4.2K]

Chandra will have 55 baseball cards

Step-by-step explanation:

Total baseball cards = 152

Let

Chandra's collection = p

Chandra has 42 baseball cards less than Simon so Simon will have 42 cards more:

Simon's Collection = p+42

We need to find Chandra's collection.

Total baseball cards will be 152 so, the equation will be:

$p+(p-42)=152$

Solving and finding value of p (Chandra's card)

$p+p-42=152\\2p=152+42\\2p=110\\p=110/2\\p=55$

So, Chandra will have 55 baseball cards.

Keywords: Word Problems

Learn more about Word Problems at:

#learnwithBrainly

6 0

3 years ago

"Tongue Piercing May Speed Tooth Loss, Researchers Say" is the headline of an article. The article describes a study of 51 young

Paul [167]

Answer:

The 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums is (0.24, 0.506).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 51, \pi = \frac{19}{51} = 0.373$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.373 - 1.96\sqrt{\frac{0.373*0.627}{51}} = 0.24$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.373 + 1.96\sqrt{\frac{0.373*0.627}{51}} = 0.506$

The 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums is (0.24, 0.506).

3 0

3 years ago

Question Help<br><br> first answer gets brainliest

eimsori [14]

88%, 44/50 is just 88/100. So 88% out of 100 of the coins are quarters.

8 0

2 years ago

The length of a rectangle is x feet. Its width is (x-7) feet. Draw and label a rectangle to represent this situation. Then write

a_sh-v [17]

Answer:

Perimeter of rectangle:

$(4x - 14)\text{ feet}$

Step-by-step explanation:

We are given the following in the question:

Length of rectangle:

$x\text{ feet}$

Width of rectangle:

$(x-7)\text{ feet}$

Perimeter of rectangle:

$2\times \text{(Length + Width)}$

Expressions to calculate perimeter

$1. ~2((x) + (x - 7))\text{ feet}\\2.~2(2x-7)\text{ feet}\\3.~ 4x-14\text{ feet}$

The attached image shows the image of the rectangle.

3 0

3 years ago

1) James needs to obtain $80,000 for his daughter's future college tuition. He is looking to invest in an

Mazyrski [523]

Answer:

$ 50,340.97

Step-by-step explanation:

From the above question, we can deduce that we are to find the Initial amount invested which is also called the Principal.

The formula to find Principal in a compound interest question is:

P = A / (1 + r/n)^nt

Where:

A = Total Amount obtained after invested = $80,000

r = Interest rate = 3.1% = 0.031

n = number of times interest in compounded = Quarterly = 4

t = time in years = 15

P = $80,000/(1 + 0.031/4)^4 × 15

P = $80,000/(1 +0.00775)^60

P = $ 50,340.97

Hence, James would have to invest $50,340.97 today to have $80,000 in 15 years.

3 0

3 years ago

The question is in the picture. will give brainilist.​

The question is in the picture. will give brainilist.