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3 years ago

Please help me with a problem of Derive the Formula for Area of a Triangle

Mathematics

1 answer:

ss7ja [257]3 years ago

4 0

You can use
$\frac{1}{2} ab \sin(c)$
Since it is an irregular triangle.
C refers to the angle and a & b refer to the adjacent sides.

So,
$\frac{1}{2} \times4.3 \times 3.8 \sin(53) \\ = 6.52485211 \\ = 6.52$

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Juan will spend at most on gifts. So far, he has spent . What are the possible additional amounts he will spend?

Andru [333]

Can you send a photo of it? I can't understand

7 0

3 years ago

Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2, and the profit

Mademuasel [1]

Answer:

$y = -\frac{2}{3}x + 490$

gradient = = $-\frac{2}{3}$

y-intercept = $490$

Step-by-step explanation:

• The slope-intercept form of an equation takes the general form:

$\boxed{y = mx + c}$ ,

where:

m = slope,

c = y-intercept.

• We are given the equation:

$2x + 3y = 1470$

To change this into the slope-intercept form, we must make y the subject:

$3y = -2x + 1470$ [subtract $2x$ from both sides]

⇒ $y = -\frac{2}{3}x + \frac{1479}{3}$ [divide both sides by 3]

⇒ $y = -\frac{2}{3}x + 490$

• Comparing this equation with the general form equation, we see that:

m = $-\frac{2}{3}$

c = $490$ .

This means that the gradient is $\bf -\frac{2}{3}$ , and the y-intercept is $\bf 490$ .

6 0

2 years ago

Expand the following 2(x+3)

Maksim231197 [3]

Answer:

2x + 6

Step-by-step explanation:

2 will multiply everything inside the bracket.

2 x X =2x

2 X 3=6

6 0

3 years ago

Read 2 more answers

The half-life of cesium-137 is 30 years. Suppose we have a

VMariaS [17]

(a) If $y(t)$ is the mass (in mg) remaining after $t$ years, then $y(t) = y(0) e^{kt}=100e^{kt}.$

$y(30) = 100 e^{30k} = \frac{1}{2}(100) \implies e^{30k} = \frac{1}{2} \implies k = -(\ln 2) /30 \implies \\ \\
y(t) = 100e^{-(\ln 2)t/30} = 100 \cdot 2^{-t/30}$

(b) $y(100) = 100 \cdot 2^{-100/30} \approx \text{9.92 mg}$

(c)
$100 e^{- (\ln 2)t/30} = 1\ \implies\ -(\ln 2) t / 30 = \ln \frac{1}{100}\ \implies\ \\ \\
t = -30 \frac{\ln 0.01}{\ln 2} \approx \text{199.3 years}$

3 0

3 years ago

5g−2≤ 3g+8 3g+8 it says to solve for g.

Bess [88]

Answer:g is greater than or equal to 6g + 18/5, or g >_ 6g + 18/5

Step-by-step explanation: 5G- 2 <_ 6g + 16

Add 2 to the 16. 5g <_ 6g + 18.

Divide 5 to both sides. g >_ 6g + 18/5

7 0

2 years ago