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3 years ago

Pls help i dont know what to do

Mathematics

2 answers:

ad-work [718]3 years ago

7 0

Answer:

-26

Tip for solving related problems: use order of operations

8090 [49]3 years ago

6 0

Answer:

-26

Step-by-step explanation:

-5 x 7=-35

-35 + 9=-26

5/5=1

-26 x 1=-26

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8) A school community had planned to reduce the number of grade 9 students per class room by constructing additional class rooms

Allisa [31]

Step-by-step explanation:

Let "c" be the original number of classrooms.

The 1200/c was the original number of students per classroom.

----

Equation:

1200/(c-4) = (1200/c)+10

Multiply thru by c(c-4)

---

1200c = 1200(c-4)+10c(c-4)

---

1200c = 1200c-4800 + 10c^2-40c

----

10c^2-40c-4800 = 0

c^2-4c-480 = 0

Factor:

(c-24)(c+20) = 0

---

Positive solution:

c = 24 (# of classrooms originaly planned)

7 0

2 years ago

Assume the availability of a method named makeStars that can be passed a non-negative integer n and that returns a String of n a

kramer

Answer:b

Step-by-step explanation:

6 0

3 years ago

Nathaniel builds birds and birdhouses using Lego blocks. Let B represent the number of birds and H represent the number of birdh

N76 [4]

Answer:

At-most 3 birdhouses.

Step-by-step explanation:

Let B represent the number of birds and H represent the number of birdhouses that Nathaniel can build with his Lego blocks.

We have been given that Nathaniel builds birds and birdhouses using Lego blocks. The inequality $43B+215H\leq3000$ represents the number of birds and birdhouses Nathaniel could build.

To find the number of birdhouses that Nathaniel can build after making 50 birds, we will substitute B=50 in our given inequality and then solve for H.

$43*50+215H\leq3000$

$2150+215H\leq3000$

Let us subtract 2150 from both sides of our inequality.

$2150-2150+215H\leq3000-2150$

$215H\leq850$

Let us divide both both sides of our inequality by 215.

$\frac{215H}{215}\leq\frac{850}{215}$

$H\leq3.953488$

As Nathaniel can make build less than or equal to 3.953488 and the biggest integer less than or equal to 3.953 is 3, therefore, Nathaniel can build at-most 3 birdhouses with remaining Lego blocks.

3 0

2 years ago

Read 2 more answers

I’LL MARK YOU BRAINLIEST PLS HELP<br><br> What statement is true about segment AB?

chubhunter [2.5K]

Answer:

First statement is correct

Step-by-step explanation:

Segment AB is tangent to circle C because $3^2 +4^2 =5^2$