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dimulka [17.4K]
3 years ago
11

Please help me I’m not the smartest

Mathematics
2 answers:
Katyanochek1 [597]3 years ago
8 0
(3x+1) + (2x+8) = 180
5x+9=180
5x=171
leonid [27]3 years ago
3 0

Answer

you can find x by setting 3x + 1 equal to 2x + 8 since the two lines are congruent (those red little ticks mean theyre

congruent)

so,  3x + 1  = 2x +8

3x = 2x + 7

x = 7

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A regular square pyramid has a slant height of 5 in and a base area of 49 in2. Find the surface area of the pyramid. -----------
Bumek [7]

Answer:

C: 119 square inches

Step-by-step explanation:

We are given;

Slant height; L = 5 in

Base area; B = 49 in²

Since it's a square pyramid, the base portion has a square shape.

Thus, area of base = x²

Where x is a side of the square.

Thus;

x² = 49

x = √49

x = 7

Perimeter of base = 7 × 4 = 28 in

Area of pyramid = ½PL + B

Plugging in the relevant values;

Area of pyramid = (½ × 28 × 5) + 49

Area of pyramid = 119 in²

6 0
3 years ago
Express in litres. 80000mm​
ira [324]

Answer:

8 l

Step-by-step explanation:

1 l = 1000 mm

8000 mm = 8000/1000

8000 mm = 8 l

5 0
3 years ago
Write a formula for S in terms of r.
bulgar [2K]

Answer:

Step-by-step explanation:

S=θ/360*2πr

S=0.020943951r

6 0
3 years ago
Read 2 more answers
Drag the labels to the correct locations. Each label can be used more than once, but not all labels will be used. Let’s look bac
inn [45]

Answer:

Graph A: two distinct roots.  Graph B: one repeated real root. Graph C: two complex roots. Graph D: two distinct real roots.

Step-by-step explanation:

Explanation:

Each graph represents a quadratic function. So by the fundamental theorem of algebra, we know that each graph will have two roots.

Graph A crosses the x-axis twice. So, graph A has two distinct real roots.

Graph B touches the x-axis once. A quadratic cannot have one real root and one complex root. So it must have one repeated real root.

Graph C doesn’t cross the x-axis. This means it must have two complex roots.

Graph D crosses the x-axis twice. So, graph D has two distinct real roots.

5 0
4 years ago
Ricardo spent $37 for a jacket which included $2.38 in sales tax. Write and solve an addition equation to find the price of the
adell [148]
Let the cost of jacket before sales tax be z.

sales tax = $2.38

When the sales tax was included the jacket = $37

Cost of Jacket + Sales tax = 37

z + 2.38 = 37           Equation

z = 37 - 2.38

z = 34.62

Hence cost of jacket = $34.62

Hope this explains it.
6 0
3 years ago
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