Area of Doghouse: 756 sq. inches Length: 108 in. So you have to multiply the length times the width to get the area: 108 x Width = 756 Answer: 7 inches
w=756:108 \\ \\ w=7 \ inches"> A = L ∗ w A = 756 s q u a re in c h es L = 108 in c h es 108 ∗ w = 756 => w = 756 : 108 w = 7 in c h es
The width of the rectangular roof of the doghouse is 7 inches. This was calculated using the area formula for rectangles. By dividing the area by the length, we isolated the width successfully.
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jawaban1. Uji HipotesisRata-rata sampel = 57Standar deviasi = 3Ukuran sampel = 9Rata-rata populasi yang diuji = 60α = 0.05Uji: Apakah mean < 60?Langkah cepat:Z = \frac{57 - 60}{3 / \sqrt{9}} = \frac{-3}{1} = -3Z kritis = -1.645 → karena -3 lebih kecil dari -1.645 → Tolak H₀✅ Kesimpulan: Rata-rata baterai kurang dari 60 jam---2. Regresi LinierData:Tahun (X) Penjualan (Y)1 802 853 924 955 1056 1117 1198 1239 13010 136---a. Scatter DiagramCukup gambar titik (X, Y) seperti:(1, 80), (2, 85), …, (10, 136)(X = tahun pengalaman, Y = penjualan)---b. Persamaan regresi:Y = 1.22 + 19.16X---c. Prediksi untuk 7 tahun pengalaman:Y = 1.22 + 19.16 \times 7 = 135.34✅ Jawaban: 135.34 ribu dolar---maaaf kalau salah